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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2

The average age of three boys is 20 years. If their ages are in the ratio of 3 : 4 : 5, the age of the youngest boy is:

18 years

15 years

12 years

21 years

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3

The average annual income(in Rs.) of certain labor workers is M and that of other workers is N. The number of labour workers is 11 times that of other workers. Then the average monthly income (in Rs.)of all the workers is :

(M + 11N)/2

(M + N)/2

1/11M + N

(11M + N)/12

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5

The average monthly income of A and B is Rs. 4030. The average monthly income of B and C is Rs. 5350 and the average monthly income of A and C is Rs. 6200. The monthly income of A is :

Rs 3900

Rs 4200

Rs 4880

Rs 5500

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6

8 years ago, the average age of a family of 5 members was 26 years. Two children having been born(with age difference of 2 years), the present average age of the family is the same. The present age of the eldest child is :

7years

4years

3years

none of these

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8

The average weight of seven boys increases by 1.3 kg when a new boy comes in place of one of them weighing 54 kg. What might be the weight of the new boy?

76

76.5

63.1

none of the above

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9

The goalkeeper of a Hockey team is 31 years old and the captain is 4 years older and the team size is 11. If the ages of these two are excluded, the average age of the remaining players is one year less than the average age of the whole team. What is the average age of the team?

28.5 years

24 years

25 years

none of the above

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10

The average age of father, mother and a son 4 years ago was 34 years and that of father and the son 4 years ago was 27 years. The present age of the mother is:

35 years

40 years

52 years

none of the above

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11

The average weight of P, Q and R is 37 kg. If the average weight of P and Q be 33 kg and that of Q and R be 42 kg, then the weight of R is:

17 kg

20 kg

26 kg

45 kg

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15

A grocer has a sale of Rs. 435, Rs. 927, Rs. 855, Rs. 230 and Rs. 562 for 5 consecutive days. How much sale must he have in the sixth day so that he gets an average sale of Rs. 625?

Rs 741

Rs 5991

Rs 6001

Rs 6991

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16

A class having 23 boys and 52 girls respectively. If the average weight of boys is 56 kg and that of girls is 50 kg. Find the average weight of the whole class?

46.25

51.84

58.35

49.25

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18

Distance between two stations A and B is 566 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 56 km per hour. Find the average speed of the train during the whole journey?

67.0 km/hr

67.2 km/hr

69.0 km/hr

69.2 km/hr

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19

The average age of boys in a class is 13 years and that of the girls is 13.6 years. The average age for the whole class is

15 years

15.5 years

16 years

cannot be computed

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20

The average age of 24 students in a group is 10 years. when teacher's age is included to it, the average increases by one.What is the teacher's age in years?

25

35

45

none of the above

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