Aptitude Questions-Bank Clerk

1. Average age of students of an adult school is 40 years. 120 new students whose average age is 32 years joined the school. As a result the average age is decreased by 4 years.Find the number of students of the school after joining of the new students:

1200
240
360
120

2. Find the least number of candidates in an examination so that the percentage of successful candidates should be 76.8%:

500
250
125
1000

3. The ratio of daily wages of two workers is 4 : 3 and one gets daily Rs 9 more than the other, what are their daily wages?

Rs 36 and Rs 27
Rs 32 and Rs 24
Rs 60 and Rs 45
Rs 80 and Rs 60

4. 0.8 portion of a tank is filled with water. If 25 litres of water is taken out from the tank, 14 litres of excess water over the half filled up tank remains in it. Find the capacity of the tank.

100 litres
130 litres
120 litres
150 litres

5. The sum of the present age of the father and his daughter is 42 years. 7 years later, the father will be 3 times old than the daughter. The present age of the father is:

32 years
35 years
22 years
28 years

6. Sum of two numbers prime to each other is 20 and their L.C.M. is 99. What are the numbers?

8 and 12
14 and 6
19 and 1
11 and 9

7. Two identical bottles A and B of sweet drinks contain sugar such that 30% of sugar in A is equal to 40% sugar in B. The ratio of sugar in the two bottles is:

3 : 4
4 : 3
12 : 1
1 : 12

8. An alloy of zinc and copper contains the metals in the ratio 5 : 3. The quantity of zinc to be added to 16 kg of the alloy so that the ratio of the metal may be 3 : 1 is:

8 Kg
6 Kg
10 Kg
3 Kg

9. A number is increased consecutively two times by 20% each. The original number is actually increased by:

44%
40%
42%
20%

10. The numbers which divide 80 in such a way that the sum of their reciprocals is 4/75 are:

35, 45
30, 50
60, 20
40, 40

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