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BOAT AND STREAMS

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Q1. A boat goes 14 km upstream in (b) 7 km/h

42 minutes. The speed of stream is (c) 5 km/h
4 km/h. The speed of boat in still (d) 8 km/h
water is

(a) 24 km/h
(b) 25 km/h
(c) 30 km/h Q5.A man moves downstream at a
(d) 23 km/h rate of 14 km/h and upstream at a
rate of 6 km/h. Speed of boat in still
water is
Q2.The speed of a boat in still water
(a) 4 km/h
is 7 km/h. If its speed in
(b) 10 km/h
downstream is 10 km/h. Then the
(c) 16 km/h
speed of stream is
(d) 2 km/h
(a) 7 km/h
(b) 3 km/h
(c) 10 km/h Q6.Aman moves 20 km downstream
(d) 6 km/h in 5 hours and 10 km up stream in
same time. The speed of stream

(a) 4 km/h
Q3.Aditya can row with stream at 10
(b) 1 km/h
km/h and against the stream at 6
(c) 1.6 km/h
km/h. His speed in still water is
(d) done
(a) 16 km/h
(b) 6 km//h
(c) 8 km/h Q7.A boat travels 18 km upstream
(d) 10 km/h in 6 hours. How long (In hrs) will it
take to cover the same distance
downstream. The speed of current is
Q4.Speed of man is 12 km/h in still one fourth the speed of boat in still
water. If the rate of current is 4 water
km/h, then the effective speed of the
(a) 3
man upstream is
(b) 4
(a) 6 km/h (c) 3.6
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(d) 3.4 of the stream is 1.5 km/h. Find the

upstream speed of swimmer?

(a) 8 km/h
Q8.A person can row with the
(b) 9.5 km/h
stream at 8 km/h and against the
(c) 9 km/h
stream at 4 km/h. The speed of the
(d) 6.25 km/h
current is (In km/hr)

(a) 1
(b) 2 Q12. A boatman rows 1 km in 5 min
(c) 1.5 along the stream and 6 km in 1 h
(d) 4 against the stream. The speed of the
stream is

(a) 3 km/h
Q9. When the speed of a boat in still
(b) 6 km/h
water is 4 km/h and the rate of
(c) 10 km/h
stream is 2 km/h, find upstream
(d) 12 km/h
speed of the boat ?

(a) 6 km/h
(b) 5 km/h Q13. Keshav can row 60 km
(c) 2km/h downstream and 36 km upstream,
(d) 7 km/h taking 10 h each time. What is the
velocity of the current?

(a) 3 km/h
Q10. If the speed of a swimmer in
(b) 2.2 km/h
still water is 9 km/h. Find the
(c) 4 km/h
downstream speed of the swimmer,
(d) 1.2 km/h
when the river is flowing with the
speed of 6 km/h?

(a) 15 km/h Q14. What time will be taken by a

(b) 18 km/h boat to cover a distance of 128 km
(c) 3 km/h along the stream, if speed of a boat
(d) 12 km/h in still water is 24 km/h and speed
of stream is 8 km/h?

(a) 8 h
Q11. A swimmer's speed in
(b) 4h
downstream is 11 km/h and speed
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(c) 7 h Q18. A man can row 44 km

(d) 6 h downstream in 4 hours. If the man's
rowing rate in still water is 8 km/hr,
then find in what time will he cover
Q15. A man can row against the 25 km upstream?
current three-fourth of a kilometre
(a) 5 hours
in 15 min and returns same
(b) 6 hours
distance in 10 min, then ratio of his
(c) 4.5 hours
speed to that of current is-
(d) 4 hours
(a) 3:5
(b) 5:3
(c) 1:5 Q19. A man can row 20 km/h in
(d) 5:1 still water and speed of the stream
is 5 m/sec. Ratio of speed of man to
current speed is
Q16. A boat goes 48 km
(a) 9:10
downstream in 20 h. It takes 4h
(b) 4:1
more to cover the same distance
(c) 1:4
against the stream. What is the
(d) 10:9
speed of the boat in still water ?

(a) 2.2 km/h

(b) 2 km/h Q20. A man can swim in still water
(c) 4 km/h at 9.6 km/hr, but takes twice as
(d) 4.2 km/h long to swim upstream then
downstream. The speed of stream is

(a) 3.2 km/hr

Q17 A man can row 15 km
(b) 2.3 km/hr
downstream in 3 hours and 5 km
1
(c) 5.6 km/hr
upstream in 2 hours. His speed in (d) 6.5 km/hr
2
still water in (km/hr) is
Q21. Speed of motorboat in still
(a) 4 km/hr water is 45 km/h. If the motorboat
(b) 4.5 km/hr travels 80 km along the stream in 1
(c) 3.5 km/hr h 20 min, then the time taken by it
(d) 5 km/hr to cover the same distance against
the stream will be
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(a) 4 h 20 min (a) 50 km

(b) 3 h 40 min (b) 60 km
(c) 2 h 40 min (c) 70 km
(d) 2 h 55 min (d) 80 km

Q25. A boatman takes twice as long

to row a distance against the stream
Q22. Speed of boat in still water is 5
as to row the same distance with the
km/h. The river is flowing with a
stream. Find the ratio of speeds of
speed of 2 km/h and time taken to
the boat in still water and the
cover a certain distance upstream is
stream?
2 h more than time taken to cover
the same distance downstream. (a) 2:1
Find the distance? (b) 3:1
(c) 1:2
(a) 10.5 km
(d) 1:3
(b) 11 km
(c) 10.9 km
(d) 15 km
Q26.A river is flowing with a steady
speed of 4 km/h. One rows his boat
downstream in the river and then
Q23.A man can row at 10 km/h in
returns by rowing upstream in the
still water. If he takes total 5 h to go
same river. When he returns to the
to a place 24 km away and return,
starting point, the total distance
then the speed of the water current
covered by him is 42 km. If the
is -
return journey takes 2h more than
(a) 2 km/h his Onward journey, then the speed
(b) 3 km/h of his rowing in still water must be:
1
(c) km/h (a) 12 km/h
2
(d) 1 km/h (b) 10 km/h
(c) 9 km/h
(d) 8 km/h
Q24.A steamer goes downstream
from one port to another in 4h. It
covers the same distance upstream Q27.The ratio of speeds of a
in 5 h. If the speed of the stream is motorboat to that of the current of
2 km/h, then find the distance water is 36:5. The motorboat goes
between the two ports. along with the current in 5 h 10
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min. Find the time to come back of Q30. Aman can row at the rate of 4
motorboat. km/hr in still water. If the time
taken to row a certain distance
(a) 5 h 50 min
upstream is 3 times as much as to
(b) 6 h
row the same distance downstream,
(c) 6 h 50 min
find the speed of the current?
(d) 12 h 10 min
(a) 3 km/hr
(b) 1.5 km/hr
Q28. In a river, the ratio of the (c) 1 km/hr
speed of stream and speed of a boat (d) 2 km/hr
in still water is 2:5. Again, ratio of
the speed of stream and speed of an
another boat in still water is 3:4. Q31. Aman swimming in a stream
What is the ratio of the speeds of the which flows 1.5 km/hr finds that in
first boat to the second boat in still a given time he can swim twice as
water? far with the stream as he can
against it, at what rate does he
(a) 10:7
swim?
(b) 15:8
(c) 4:3 (a) 4 km/hr
(d) 5:4 (b) 4.5 km/hr
(c) 5 km/hr
(d) 3.5 km/hr
Q29. Aman can row at the rate of
3.5 km/hr in still water. If the time
taken to row a certain distance Q32. A man can row upstream 36
1
upstream is 2 times as much as to km in 6 hours. If the speed of a man
2
in still water is 8 km/hr, find how
row the same distance downstream,
much he can go downstream in 10
find the speed of the current.
hours?
(a) 2.5 km/hr
(a) 150 km
(b) 1.5 km/hr
(b) 80 Km
(c) 3 km/hr
(c) 90 km
(d) 1.25 km/hr
(d) 100 km
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Q33. The speed of a boat in still starting point in a river which flows
water is 4 km/hr and the speed of at 3 km/hr. Find his average speed
current is 2 km/hr. If the time taken for total journey ?
to reach a certain distance upstream
(a) 9 km/hr
is 9 hours, find the time it will take
(b) 6 km/hr
to go to same distance downstream?
(c) 3 km/hr
(a) 2 hrs (d) 14.4 km/hr
(b) 2.5 hrs
(c) 3.5 hrs
(d) 3 hrs Q37. Aman can row 7 km/hr in still
water. If the river is running at 3
km/hr, it takes 6 hours more in
Q34. A person can swim in still upstream than to go downstream for
water at 4 km/hr. If the speed of the same distance. How far is the
water is 2 km/hr, how many hours place?
will the man take to swim back
(a) 48 km
against the current for 6 km ?
(b) 36 km
(a) 3 (c) 42 km
(b) 4 (d) )40 km
1
(c) 4
2
(d) 5
Q38. A man can row 9 km/hr in still
water. If the river is running at 3
km/hr, it takes 3 hours more in
Q35. Aman can row at a speed of
upstream than to go downstream for
4.5 km/hr in still water to a certain
the same distance. How far is the
upstream point and back to the
place?
starting point in a river which flows
at 1.5 km/hr. Find his (a) 30 km
(b) 36 km
(a) 4 km/hr
(c) 24 km
(b) 6 km/hr
(d) 42 km
(c) 4.5 km/hr
(d) 5 km/hr

Q36. Aman can row at a speed of 15 Q39. A boat takes 3 hours to travel
km/hr in still water to a certain from place M to N downstream and
upstream point and back to the back from N to M upstream. If the
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speed of boat in still water is 4 up stream, it takes 4 hours. What is

km/hr, what is the distance the speed of the boat in still water?
between the two places?
(a) 4 km/hr
(a) 8 km (b) 6 km/hr
(b) 12 km (c) 8 km/hr
(c) 6km (d) Data inadequate
(d) Data inadequate

Q43. A boatman goes 2 km against

Q40. P,Q and R are the three towns the current of the stream in 1 hour
on a river which flows uniformly. Q and goes 1 km along the current in
is equidistant from P and R. I row 10 minutes. How long will it take to
from P to Q and back in 10 hours go 5 km in stationary water?
and I can row downstream from P to
(a) 40 minutes
R in 4 hours. Compare the speed of
(b) 1 hour
my boat In still water with that of
(c) 1 hr 15 min
the river.
(d) 1 hr 30 min
(a) 5:3
(b) 4:3
(c) 6:5 Q44.A man takes twice as long to
(d) 7:3 row a distance against the stream as
to row the same distance in favour
of the stream. The ratio of the speed
Q41.A boat goes 11 km along the of the boat (in still water) and the
stream in 1 hr and 5 km against the stream is:
stream in 1 hr. The speed of the
(a) 2:1
boat in still water (in km/hr) is:
(b) 3:1
(a) 3 (c) 3:2
(b) 5 (d) 4:3
(c) 8
(d) 9
Q45. A boat running upstream takes
8 hours 48 minutes to cover a
Q42. A boat running downstream certain distance, while it takes 4
covers distance of 16 km in 2 hours hours to cover the same distance
while for covering the same distance running downstream. What is the
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ratio between the speed of the boat (a) 4

and speed of the water current (b) 5
respectively? (c) 6
(d) 10
(a) 2:1
(b) 3:2
(c) 8:3
Q49.A boat takes 90 minutes less to
(d) Cannot be determined
travel 36 miles downstream than to
travel the same distance upstream.
If the speed of the boat in still water
Q46.If a boat goes 7 km upstream in
is 10 mph, the speed of the stream
42 minutes and the speed of the
is:
stream is 3 kmph, then the speed of
the boat in still water is: (a) 2 mph
(b) 2.5 km/hr
(a) 4.2 km/hr
(c) 3 mph
(b) 9 km/hr
(d) 4 mph
(c) 13 km/hr
(d) 21 km/hr

Q50. At his usual rowing rate, Rahul

can travel 12 miles downstream in a
Q47.A man can row at 5 kmph in
certain river in 6 hours less than it
still water. If the velocity of current
takes him to travel the same
is 1 kmph and it takes him 1 hour
distance upstream. But if he could
to row to a place and come back,
double his usual rowing rate for his
how far is the place?
24 mile round trip, the downstream
(a) 2.4 km 12 miles would then take only one
(b) 2.5 km hour less than the upstream 12
(c) 3 km miles. What is the speed of the
(d) 3.6 km current in miles per hour?
1
(a) 1
3
2
Q48.A motorboat, whose speed is 15 (b) 1
3
km/hr in still water goes 30 km (c) 2
1

downstream and comes back in a 3

2
total of 4 hours 30 minutes. The (d) 2
3
speed of the stream (in km/ hr) is:
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Q51. A motorboat went downstream motorboat covers the whole way to

for 28 km and immediately and fro in exactly 10 hours. If the
returned. It took the boat twice as speed of the motorboat in still water
long to make the return trip. If the increased by 40% then it takes the
speed of the river flow were twice as motor boat 7 hours to cover the
high, the trip downstream and back same way (from Varanasi Patna and
would take 672 minutes. Find the back again). Find the time necessary
speed of the boat in still water and for the motorboat to sail from
the speed of the river flow: Varanasi to Patna when its speed in
still water is not increased:
(a) 9 km/h, 3 km/h
(b) 9 km/h, 6 km/h (a) 3 hours
(c) 8 km/h, 2 km/h (b) 4 hours
(d) 12 km/h, 3 km/h (c) 4.8 hours
(d) None of these

Q52. Two friends A and B, on their

last day in college decided to meet Q54.A motorboat moves from point
after 20 years on a river. A had to A to point B and back again, both
sail 42 km to the meeting place and points being located on the
B had to sail 35 per cent less. To riverbank. If the speed of the boat in
arrive at the meeting place at the still water is doubled, then the trip
same as his friend B, A started at from A to B and back again would
the same time as B and sailed with take 20% of the time that the
the speed exceeding by 5 km/h the motorboat usually spends in the
speed of B Find the speed of A: journey. How many times is actual
speed of the motor boat higher than
(a) 10 kmph
the speed of the river flow?
(b) 14 kmph
(c) 9 kmph 3
(a) √
(d) 21 kmph 2

2
(b) √
3
2
Q53. On the banks of the river (c)
3
Yamuna there are two bathing 3
(d)
points in Varanasi and Patna. A diya 2

left in the river at Varanasi reaches

Patna in 24 hours. However, a
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Q55. The normal speed of a boat in Q57. A boat goes 60 km and back to
still water is 4 times the speed of the starting point in 10 hours. The time
river. The boat goes upstream and taken by the boat to row 3 km
takes 2 hrs to reach B from A. By downstream is equal to the time
what percent should the boat taken by the boat to row 2 km
increase/decrease its speed if it is upstream. Find the speed of boat in
required to reach A from B in still water and rate of current:
exactly 1 hr 30 minutes?
(a) 12.5 km/hr, 2.5 km/hr
(a) increase by 20% (b) 15 km/hr, 10 km/hr
(b) increase by 25% (c) 15 km/hr, 12 km/hr
(c) decrease by 20% (d) None of these
(d) decrease by 25%

Q56. Two b0ats start at the same

Q58. Aman can row against the
instant to cross a river W metre
current of a kilometre in 15 min and
wide. The faster boat reaches the
returns the same distance in 10
other bank and returns
min. The ratio of this speed to that
immediately. What are the distance
of the current is:
travelled by them when they meet,
where the speeds of these boats are (a) 3:5
b1 & b 2 ? (b) 5:3
(c) 1:5
(d) 5:1

Q59. The ratio of speed of a motor-

boat to that of the current of water
is 36:5. The boat goes along with the
current for 10 minutes. It will come
back in:

(a) 12 min
(b) 14.5 min
(c) 13.22 min
(d) 11.6 min
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Q60. A boat goes 20 km to point B and coming back to point

downstream in 1h and the same C midway between A and B. If the
distance upstream in 2h. The speed velocity of the stream is 6 km/hr
of the boat in still water is and the speed of the boat in still
water is 9 km/hr, what is the
(a) 15 km/h
distance between A and B?
(b) 10 km/h
(c) 5 km/h (a) 115km
(d) 7.5 km/h (b) 120km
(c) 140km
(d) 165km
Q61. A Swimmer Swims certain
distance downstream is 0.6 times of
the same distance in upstream. Find Q64.A Boat takes 128 min less to
the value of "x if the speed of boat in travel to 48 Km downstream than to
still water and speed of stream is x ravel the same distance upstream. If
km/hr and 10 km/hr respectively? the speed of the stream is 3 Km/hr.
Then Speed of Boat in still Water is?
(a) 20 km/hr
(b) 30 km/hr (a) 6 km/hr
(c) 50 km/hr (b) 9km/hr
(d) 40 km/hr (c) 12km/hr
(d) 15km/hr

Q62. A man travels certain distance

(x km) along the stream in 3 hrs and Q65. A boat travels downstream for
against the stream in 5 hrs. Then 14km and upstream for 9km.If the
find the total time taken to travels boat took total of 5 hours for its
x+60 km downstream and upstream journey. What is the speed of the
if the speed of stream is 10 km/hr? river flow if the speed of the boat in
still water is 5km/hr?
(a) 11 hrs 12 min
(b) 10 hrs 12 min (a) 8 km/hr
(c) 12 hrs 20 min (b) 2km/hr
(d) 12 hrs 20min (c) 6km/hr
(d) 5km/hr

Q63. A boat takes 28 hours for

travelling downstream from point A
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Q66. A man can row a boat at a (a) 36km

speed of 10 km/hr in still water. He (b) 24km
goes to a certain point upstream (c) 48km
and back to the starting point in a (d) 32km
river. The speed of the flowing water
is 4 km/hr. What is the average
speed of the boat for that journey? Q69.A man can row 28 km/hr in
still water. It takes him thrice as
(a) 9.2km/hr
long to move upstream as to
(b) 8.4km/hr
downstream the river. Then find the
(c) 9.6km/hr
rate of stream?
(d) 7.2km/hr
(a) 32 km/hr
(b) 34 km/hr
Q67. The speed of a boat in still (c) 14 km/hr
water is 18 km/hr and the speed of (d) 17 km/hr
the stream is 3 km/hr. It takes a
total 11 hours to row upstream from
point X to Point Y and downstream Q70. A man can row 30 km/hr in
from Point Y to Point Z. If the still water and the river is running
distance from A to Y is one third of at 15 km/hr. If the man takes 3 hrs
the distance between Y and Z.what to row to a place and back, how far
is the total distance travelled by the is the place?
boat (both upstream and
(a) 28.25km
downstream)?
(b) 38.75km
(a) 190km (c) 33.75km
(b) 180km (d) 22.50km
(c) 210km
(d) 170km
Q71.A man rows to a place 60 Km
distance and come back in 8 hours.
Q68. A boat can cover 9.6 km He finds that he can row 10 km with
upstream in 24 minutes. If the the stream in the same time as 6 km
speed of the current is 1/4th of the against the stream. The rate of the
boat in still water, then how much stream is?
distance (in km) can the boat
(a) 6km/hr
covered downstream in 36 minutes?
(b) 8km/hr
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(c) 4km/hr (d) 42KM

(d) 5km/hr

Q75.The speed of the current is 4

Q72.A boat can travel 16 Km km/hr. A boat goes 10 km upstream
downstream in 32 minutes. If the and comes back to Starting point in
speed of the current is 1/4 of the 80 min. What is the speed of the
speed of the boat in still water, what boat in still water? (In km/hr)
distance can the boat travel in 20
(a) 10
minutes?
(b) 16
(a) 12km (c) 14
(b) 16km (d) 12
(c) 18km
(d) 8km
Q76. A boat can travel 12.8 km
downstream in 32 minutes. If the
Q73. A boat can travel 9.6 km speed of the current is 1/5 of the
downstream in 32 minutes. If the speed of the boat in still water, what
speed of the current is 1/5 of the distance can the boat travel in 27
speed of the boat in still water, then minutes?
find the speed of upstream?
(a) 7.5
(a) 8km/hr (b) 12
(b) 10km/hr (c) 17
(c) 12km/hr (d) 9
(d) 16km/hr

Q77.The distance covered by the

Q74.A boat can cover 9.6 km boat in upstream and downstream
upstream in 24 minutes. If the is 12Okm and 160 km respectively.
speed of the current is ¼ of the boat The time taken by the boat to cover
in still water, then how much both upstream and downstream is 4
distance can the boat cover hours. The speed of the boat in still
downstream in 36 minutes? water is 70 kmph. Find the speed of
the boat downstream?
(a) 24km
(b) 36km (a) 80
(c) 28Km (b) 50
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(c) 100 hour, The time taken by the boat to

(d) 60 travel from A to B downstream is 48
minutes less than the time taken by
the same boat to travel from B to
Q78.There is a road beside a river. upstream. If the distance between A
Two friends Started from a place A, and B is 8 km more than the
then moved to church situated at distance between B and C, then
another place B and then returned what is the distance between A and
to a place A again. One of them B?
moves on a cycle at a speed of
(a) 43km
14km/hr, while the other sails on a
(b) 92Km
boat at a speed of 17Km/hr. If the
(c) 87km
river flows at the Speed of 5 km/hr,
(d) none of these
which of the two friends will return
to a place A first? And what is the
difference between their speeds?
Q81. A man can row 160 km
(a) Boat sailors,1.52 downstream and 200 km upstream
(b) Cyclist.2.41 in 14 hours. If the speed ratio of
(c) Boat sailors,2.41 downstream to upstream is 2:1,
(d) Cyclist,1.52 then how many hours takes to row
240 km along the stream?

(a) 12 hrs
Q79. If a boy rows 8 km
(b) 8 hrs
downstream in 6 hours and 4 km
(c) 4 hrs
upstream in 4 hours then how long
(d) 6 hrs
will he take to cover 16 km in
stationary (still) water?

(a) 8 Q82. Boat A travels 120Km from P

(b) 14 to Q downstream and boat B travels
(c) 22 from Q to P upstream. If both the
(d) 16 boats starts at 1.00 pm and meets
at 2.30 pm and the speed of Current
is 10 km/hr, then find the sum of
Q80. The speed of the boat in still the speed of boat A and B?
water is 48km per hour and the
(a) 50 km/hr
speed of the stream is 8 km per
(b) 60 km/hr
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(c) 40 km/hr (c) 98 hrs

(d) 80 km/ hr (d) 85 hrs

Q83. A boat running downstream Q86. A man takes thrice as long to

covers a distance of 40 km n 5 hrs row a distance against the stream as
and for covering the same distance to row the same distance in favour
upstream, It takes 0 hrs. What is of the stream. The ratio of the speed
the speed of the stream? of the boat (in still water) and the
stream is?
(a) 5 km/hr
(b) 2 km/hr (a) 2:1
(c) 6 km/hr (b) 3:2
(d) 4 km/hr (c) 1:2
(d) 2:3

Q84. A man rows to a place 40 km

distance and come back in 9 hours. Q87. Rajiv can swim at 10 km/hr in
He finds that he can row 5 km with still water. The river flows at 3
the stream in the same time as 4 km km/hr and it takes 12 hours more
against the stream .The rate of the upstream than downstream for the
stream is? same distance. How far is the place?

(a) 1 km/hr (a) 182 km

(b) 1.5 km/hr (b) 160 km
(c) 2 km/hr (c) 176 km
(d) 2.5 km/hr (d) 164 km

Q85. Speed of a boat in standing Q88. A person rows downstream at

water is 12 km/hr and the speed of a speed of 10 km/hr while travelling
the stream is 3 km/hr. A man rows upstream the speed reduces by 40%
to a place at a distance of 630 Km then find the speed or u stream?
and comes back to the starting
(a) 8km/hr
point. The total time taken by him
(b) 2 km/hr
is?
(c) 6 km/hr
(a) 112 hrs (d) 4 km/hr
(b) 100 hrs
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Q92. A boat covers a distance of 60

km downstream 2 hours while it
Q89.A boat covers a distance of 30
takes 6 hours to cover the same
km downstream in 2 hours while it
distance upstream. What is the
takes to cover the same distance
speed of the boat in km per hour?
upstream. What is the speed of the
boat in km per hour? (a) 20 km/hr
(b) 12 km/hr
(a) 12 km/hr
(c) 16 km/hr
(b) 10 km/hr
(d) 25 km/hr
(c) 14 km/hr
(d) 16 km/hr

Q93. A man can row a certain

distance downstream in 6 hours and
Q90. The speed of the man in still
return the same distance in 9 hours.
water is 7.5 km/hr and the rate of
If the speed of the stream is 3
flow of water is 2.5 km/hr. He takes
km/hr find the speed of the man in
30 hours to row to a place and back.
still water?
Find the distance between these two
places? (a) 25
(b) 15
(a) 130 km
(c) 20
(b) 165 km
(d) 30
(c) 142 km
(d) 100 km

Q94. A boat covers 32 km in 4

hours along the stream and 20 km
Q91. A boat runs at 25 km per hour
in 5 hours against the stream. Find
along the Stream and 10 km per
the speed of stream and speed of
hour against the Stream. Find the
boat in still water
ratio of the speed of the boat in still
water to that of the speed of the (a) 6 km/hr and 2 km/hr
stream? (b) 4 km/hr and 2 km/hr
(c) 6 km/hr and 3 km/hr
(a) 2:3
(d) 7 km/hr and 3.5 km/hr
(b) 8:3
(c) 5:3
(d) 7:3
Q95. A boat takes 46800 seconds to
cover a certain distance running
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upstream, while running Q98. A man can row 160 km

downstream it takes 12 hours to downstream and 200 km upstream
cover the same distance. What is the in 14 hours. If the speed ratio of
ratio between the speed of boat in downstream to upstream is 2:1,
still water and the velocity of then how many hours takes to row
current? 240 km along the stream?

(a) 11:56 (a) 12 hrs

(b) 13:51 (b) 8 hrs
(c) 53:12 (c) 4 hrs
(d) 25:1 (d) 6 hrs

Q96. The speed of a boat in still Q99. A boat sails at 18km/hr in still
water is 20 km/hr and the rate of water starts chasing, from 18km
current is 4 km/hr. The distance behind, another one which sails at
travelled by downstream in 10 10 km/hr in the upstream direction.
minutes is? After how long will it catch up if the
stream is flowing at 4 km/hr?
(a) 9 km
(b) 12 km (a) 3.5 hours
(c) 8 km (b) 3 hours
(d) 4 km (c) 1.5 hours
(d) 4.5 hours

Q97. Find the time taken by the

boat in Upstream distance, if it Q100. Two taps A and B are opened
takes 4hrs on downstream and together to fill a tank. Both the taps
Speed of boat in still water is fill the tank in time ‘x’. If B
12kmph and Speed of stream is separately took 25 minutes more
4kmph. time than "x to fill the tank and B
took 49 minutes more time than "x"
(a) 3hrs
to fill the tank, and then find out the
(b) 5hrs
value of x?
(c) 8hrs
(d) 10hrs (a) 48 minutes
(b) 54 minutes
(c) 24 minutes
(d) 35 min
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BOAT & STREAMS

100 MCQ
ANSWER KEY
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ANSWER KEY

1.A

2.B

3.C

4.D

5.B

6.B
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7.C

8.B

9.C
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10.A

11.A

12.A

13.D
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14.B

15.D

16.A
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17.C

18.A

19.D
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20.A

21.C

22.A
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23.A

24.D

25.B
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26.B

27.C
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28.B

29.B

30.D

31.B

32.D
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33.D

34.A

35.A

36.D
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37.D

38.B

39.D

40.A
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41.C

42.B

43.C
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44.B

45.C
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46.C

47.A

48.B
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49.A

50.D
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51.A

52.B
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53.B
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54.A

55.C

56.B
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57.A

58.D
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59.C

60.A

Q61. ANS D

Solution:
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Q62. ANS A

Solution:

Q63. ANS B

Solution:

Q64. ANS C

Solution:

Q65. ANS B

Solution:
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Q66. ANS B

Solution:

Q67. ANS C

Solution:
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Q68. ANS B

Solution:

Q69. ANS C

Solution:

Q70. ANS C

Solution:
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Q71. ANS C

Solution:

Q72. ANS D

Solution:
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Q73. ANS C

Solution:

Q74. ANS A

Solution:
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Q75. ANS B

Solution:

Q76. ANS D

Solution:

Q77. ANS A

Solution:

Q78. ANS A
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Solution:

Q79. ANS B

Solution:

Q80. ANS D

Solution:
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Q81. ANS D

Solution:

Q82. ANS D

Solution:

Q83. ANS B

Solution:

Q84. ANS A

Solution:
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Q85. ANS A

Solution:

Q86. ANS A

Solution:

Q87. ANS A

Solution:
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Q88. ANS B

Solution:

Q89. ANS B

Solution:

Q90. ANS D

Solution:

Q91. ANS D

Solution:
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Q92. ANS A

Solution:

Q93. ANS B

Solution:

Q94. ANS A

Solution:
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Q95. ANS D

Solution:

Q96. ANS D

Solution:

Q97. ANS C

Solution:

Q98. ANS D

Solution:
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Q99. ANS D

Solution:

Q100. ANS D

Solution: