AVERAGE
1 . The weights (in kg) of five girls of a class are 49, 42, 61, 55 and 58. What is the average
weight (in kg) of these five girls?
(a) 53 (b) 54
(c) 51 (d) 52
2 . The daily earnings of a taxi driver during a week are: ` 350, ` 470, ` 510, ` 550, ` 560, `
580 and ` 620. What is his average daily earning (in `) for the week?
(a) 490 (b) 520
(c) 530 (d) 510
3 . Find the average of the following sets of numbers. 693, 456, 876, 532, 934, 691, 596,
398, 682
a) 550.50 (b) 750.80
(c) 650.89 (d) 725.90
4 . At a courier shop, the weights of 8 parcels were found to be 1.5 kg, 1.25 kg, 1.35 kg, 750
gm, 950 gm, 0.7 kg, 0.4 kg, and 0.5 kg. Find their average weight.
(a) 925gm (b) 700gm
(c) 875gm (d) 900gm
5 . The average of 32, 34, 38, 21, 26 and x is 30. What will be the value of x?
(a) 31 (b) 29
(c)27 (d)28
6 . The average of 29.75, 18.25 and number N is 23. What is the value of number N?
(a)23 (b)19
(c)17 (d)21
7 . A shopkeeper has a sale of `5,445, `5,937, `5,865 and `6,562 for 4 consecutive days. If he
gets an average sale of `6,050 for 5 days, then his sale on the fifth day is:
(a) `6,131 (b) `6,441
(c) `6,231 8 (d) `6,341
8 . A family spends Rs.4,600 Rs.5,600 Rs.4,800, Rs.3,800 and Rs.6,000 on groceries in the
first 5 months of the year. How much should the family spend in the sixth month to make
the average expenditure of the family on groceries for 6 months to Rs. 4500?
(a) Rs.2,200 (b) Rs.4,500
(c) Rs.3,500 (d) Rs.3,650
9 . The average of 52, 71, 43, 22, a, and b is 55 and the average of 42, 45, 49, 51, 42, c, and
d is 53. What is the average of a, b, c, and d?
(a) 54.7 (b) 71
(c) 54 (d) 142
10 . The average of 15 numbers is 30, while the average of 13 of these numbers is 32. If the
remaining two numbers are equal, then what is each of the two numbers?
(a) 34 (b) 31
(c) 17 (d) 16
11 . Of the three numbers, second is one-third of first and is also three-fourth of the third
number. If the average of three numbers is 112, then what is the smallest number?
(a) 63 (b) 45
(c) 84 (d) 189
12 . If A is 1/6 of C, and B is twice of A, and the average of A, B and C is 30, then the
difference between A and C is:
(a) 60 (b) 40
(c) 80 (d) 50
13 . The average of 12 numbers is 32. Each number is multiplied by 2 find the average of
the new set of numbers
(a) 75 (b) 70
(c) 68 (d) 65
14 . The average of 25 numbers is 8. If each number is multiplied by 12, then what will be
the new average be?
(a) 20 (b) 28
(c) 96 (d) 48
15 . The average of 10 numbers is 42. If each number is increased by 5 then what will be
the new average?
(a) 42 (b) 47
(c) 92 (d) 54
16 . The average of 24 numbers is 43. If we subtract a number 'M' from each number, then
the average become 38. What was the value of M?
(a) 12 (b) 5
(c) 7 (d) 10
17 . The average of 23 numbers is 81. If each number is divided by 6 and add 2.5 to each
number then what will be the new average
(a) 20 (b) 16.5
(c) 16 (d) 17
18 . Average of 8 values is 36. If 4 is subtracted from each of the first three values and 5 is
added in the each of dhe next five values, then what will be the new average?
(a) 34.325 (b) 36.350
(c) 38.325 (d) 37.625
19 . The average of n number is 36. If each of 75% of the numbers is increased by 6 and
each of the remaining numbers is decreased by 9, then the new average of the number is :
(a) 37.125 (b) 33.75
(c) 38.25 (d) 36.25
20 . The average of n numbers is 45. If 60% the numbers are increased by 5 each and the
remaining numbers are decreased by 10 each, then what is the average of the numbers so
obtained?
(a) 42 (b) 43
(c) 46 (d) 44
21 . The average of 15 results is 21. The average of the first 7 of those is 21 and the average
of the last 7 is 20. What is the 8th result?
(a) 25 (b) 31
(c) 28 (d) 22
22 . The average weight of 100 students is 34 kg. The average weight of first 49 students is
34 kg and of last 50 students is 32 kg. What is the weight of the 50th student?
(a) 138 kg (b) 134 kg
(c) 130 kg (d) 136 kg
23 . The average weight of A, B and C is 77 kg. If the average weight of A and B is 68 kg and
that of B and C is 83 kg, then the weight (in kg) of B is:
(a) 71 (b) 74
(c) 67 (d) 73
24 . The average weight of A, B and C is 65 kg. If the average weight of A and B is 63.5 kg,
and the average weight of Aand C is 67.5 kg. then the weight of A (in kg) is:
(a)65 (b)67
(c)60 (d)68
25 . Of the five subjects, the average marks of Rakesh in first 3 subjects was 75 and the
average marks in the last 3 subjects was 82. If his marks in the third subject was 66, what
was his average marks in all the 5 subjects?
(a) 76 (b) 84
(c) 80 (d) 81
