Ratio and proportion
1. If A: B is 3:4 and B:C is 8:9, then find A: B:C?
a. 3:4:5
b. 1:2:3
c. 7:12:17
d. 6:8:9
2. What is the duplicate of the number ratio 2:7
a. 4:49
b. 49:4
c. 4:14
d. 8:343
3. Find compound ratio of 2:7,5:3 ,4:7?
a. 147:40
b. 40:147
c. 147:30
d. 30:147
4. If Rs. 100 is divided into three parts,proportional to 1:2:2 then
first part is
a. 20
b. 40
c. 10
d. 25
5. A person earns Rs.1200 per day and spends Rs.700. find the
ratio of the savings to the expenditure
a. 7:5
b. 5:7
c. 3:6
d. 3:4
6. Monthly income of A and B are in the ratio of 4:3 and their
savings arein the ratio of 3:2.if the expenditure of each will be
Rs 600. Then the monthly income of each ?
a. 1800,2400
b. 2400,1800
c. 1200,2000
d. 2000,2200
7. Three boys are aged 2 years, 4years, 8 years then they want to
divide seventy rupees in the ratio of their ages?
a. 20:40:10
b. 10:40:10
c. 10:20:40
d. 40:20:10
8. The ratio of length and width of a rectangle sheet is 5:3.if the
width of the sheet is 18cm,find the width of the sheet?
a. 18
b. 15
c. 6
d. 3
9. The salaries of A, B,C are in the ratio 5:3:2.if the increments
of 20%, 10% and 20% are allowed in their salaries, then what
will be the new ratio of their salaries
a. 22:11:9
b. 22:10:8
c. 20:11:8
d. 20:10:9
10. Two number are respectively 40% and 60% more than
the third number. The ratio of the two number is
a. 6:7
b. 7:8
c. 8:7
d. 7:5
11. The sum of the money to be distributed among P,Q,R and
S in the proportion 2:5:6:7, if R gets Rs.500 more than S, what
is P’s share?
a. 500
b. 700
c. 1000
d. 1200
12. Ratio of earnings of A and B is 3:5. If the earnings of A
increased by 25% and those of B decreased by 30%, the new
ratio of their earnings become 6:8.what is A’s earnings
a. 16,000
b. 34,000
c. 15,000
d. 32,000
13. The sum of the three number is 68.if the ratio of the first
to secondnumber is 3:2 and that of the second to the third is
5:3, then the second number is
a. 21
b. 22
c. 23
d. 24
14. A Zoo has 66 fishes, some white and rest are orange, w
hich of the following could be the ratio of white to orange
fishes in the zoo?
a. 1:7
b. 2:9
c. 3:7
d. 2:5
15. The ratio of the number of boys to thethat of girls in a
school is 3:2.if 30% of boys and 70% of girls appeared in an
examination, the ratio of students appeared in the
examinations to thatnot appeared in the examination is
a. 23:27
b. 22:25
c. 21:17
d. 18:17
16. If 20% of X = 30% of y then x:y is
a. 2:3
b. 3:2
c. 1:2
d. 1:3
17. In a bag there are coins of 25p, 10p and 5p in the ratio
1:2:3. If there are Rs.45 in all then find how many 25p coins
are there
a. 60
b. 65
c. 70
d. 75
18. Find out the third proportion of the term 12 and 24
a. 38
b. 44
c. 48
d. 42
19. If a:b =2:3 and b:c 6:5 and c:d = 3:5 then find the value of
a:b:c:d
a. 18:25:12:18
b. 12:18:15:25
c. 25:18:15:12
d. 12:25:18:25
20. The ratio of boys and girls in the school is 7:9 when 22
new boys are joined in this school then the ratio become
9:10.how many girls in this school?
a. 180
b. 200
c. 160
d. 220
21. Two numbers are in the ratio of 5:8.if 4 is subtracted from
each then the ratio become 1:2, the small number is
a. 16
b. 4
c. 10
d. 2
22. X:Y = 7:4 then (4x +7y): (7x +4Y)
a. 65:56
b. 56:65
c. 34:45
d. 13:18
23. The sum of present age of 2persons is 100 years. Before 5
years the ratio of their ages 5:13.find the age of younger
person
e. 15
a. 20
b. 25
c. 30
24. A sum of Rs. 315 consists of 25 paise, 50 paise, 1rupee in
the ratio of 3:4:6. What is the number of each kind of coins?
a. 108,144,216
b. 216,144,27
c. 120,35,108
d. 108,122,35
