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

After replacing an old member by a new member, it was found that the average age of five members of a club is the same as it was 4 years ago. What is the difference between the ages of the replaced and the new member?

12 years

4 years

18 years

20 years

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5

In a batch of ten boys, 9 boys spent Rs. 35 each for their meals. The tenth one spent Rs. 18 more than the average expenditure of all the ten. The total money spent by all of them was:

Rs 260

Rs 290

Rs 370

Rs 400.50

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12

In a class there are 40 boys and 45 girls. If the average weight of boys is 51kg and that of girls is 47kg, find the average weight of the whole class.

40 kg

45 kg

48.88 kg

42.5 kg

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13

Distance between two stations A and B is 1108 km. A train covers the journey from A to B at 84 km per hour and returns back to A with a uniform speed of 56km per hour. Find the average speed of train during the whole journey.

60 km/hr

30.5 km/hr

57 km/hr

67.2 km/hr

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14

The average of 65 numbers is 40. If two numbers, 83 and 60 are discarded, then the average of the remaining numbers is nearly:

28.32

39

38.78

29

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18

9 men went to a restaurant for taking their snacks. Eight of them spent Rs.15 each on their snacks and the ninth spent Rs.8 more than the average expenditure of all the nine. What was the total money spent by them.

Rs 115

Rs116

Rs 144

Rs 178

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