operations on numbers (6.papers)

hcf and lcm (5.papers)

averages (8.papers)

problems on ages (9.papers)

percentage (4.papers)

profit and loss (4.papers)

ratio and proportion (5.papers)

chain rule (5.papers)

time and work (4.papers)

pipes and cisterns (5.papers)

time and distance (5.papers)

problems on trains (8.papers)

boats and streams (7.papers)

partnership (6.papers)

simple interest (4.papers)

compound interest (2.papers)

permutation and combination (3.papers)

clock (2.papers)

calendar (3.papers)

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3

A family consists of grand parents, parents and three grand children. The average age of the grand parents is 63 years, that of the parents is 37 years and that of the grandchildren is seven years. What is the average of the family?

200/7 years

221/7 years

225/7 years

None

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5

The average age of 30 students of a class is 20 years. Out of these, the average age of 10 students is 16 years and that of the other 19 students is 22 years. The age of the 30th student is:

22 years

24 years

15 years

16 years

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6

The average price of 10 oranges is Rs. 12 while the average price of 8 of these oranges is Rs. 11.75. Of the remaining two oranges, if the price of one orange is 60% more than the price of the other, what is the price of each of these two oranges?

Rs 5, Rs 7.50

Rs 8, Rs 12

Rs 10, Rs 16

Rs 12, Rs 14

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9

If the average marks of two sections of 40 and 45 students respectively is 75 and 60, then the average marks of all the students is:

53.33

67.05

75

None

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10

The mean of 50 numbers was 36. It was found later that a number 48 was wrongly taken as 23. The corrected new mean is:

35.2

36.1

36.5

39.1

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11

The average weight of X, Y and Z is 90 kg. If the average weight of X and Y be 80 kg and that of Y and Z be 86 kg, then the weight of Y is :

87 kg

70 kg

56 kg

62 kg

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12

The average weight of nine men increases by 1.8 kg when a new man comes in place of one them weighing 72 kg. What might be the weight of the new man?

76 kg

76.5 kg

88.2 kg

Data Inadequate

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13

The average of five consecutive odd numbers is 55. What is the difference between the highest and lowest numbers?

2

5

8

Can't be determined

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15

In a class, the average age of the boys is 16 years and that of the girls is 15 years. The average age for the whole class is:

15 years

15.5 years

16 years

Can't be determined

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16

The average weight of three boys M, N and P is 54 1/3 kg, while the Average weight of three boys N, Q and R is 53 kg. What is the average weight of M, N, P, Q and R?

52.4 kg

53.2 kg

53.8 kg

Data Inadequate

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17

The arithmetic mean of the scores of a group of students in an exam was 61. The brightest 20% of them secured a mean score of 80 and the dullest 25% a mean score of 31. The mean score of remaining 55% is:

45

50

67.72 approx

74.6 approx

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20

A batsman of a cricket has a certain average for 10 innings. In the eleventh inning, he scored 108 runs, thereby increasing his average by 6 runs. His new average is:

48 runs

52 runs

55 runs

60 runs

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