Aptitude Question Papers



APTITUDE QUESTIONS AND ANSWERS 11 to 20

11. A sum was put at simple interest at a certain rate for 2 years. Had it been put at 1% higher rate. It would have fetched Rs. 24 more. The sum is:

Rs. 600
Rs. 1200
Rs. 800
Rs. 480

12. A train crosses a platform 100 metres long in 60 seconds at a speed of 45 km per hour. The time taken by the train to cross an electric pole is:

8 seconds
1 minute
52 seconds
data inadequate

13. In a class, there are 20 boys whose average age is decreased by 2 months, when one boy aged 18 years is replaced by a new boy. The age of the new boy is :

14 years 8 months
15 years
16 years 4 months
17 years 10 months

14. 15 litres of a mixture contains 20% alcohol and the rest water. If 3 litres of water be mixed in it, the percentage of alcohol in the new mixture will be :

17
16
18
15

15. A train 50 metres long passes a platform 100 metres long in 10 seconds The speed of the train is:

10 km/hr
15 km/hr
54 km/hr
100 km/hr

16. A contract is to be completed in 56 days and 104 men were set to work, each working 8 hours a day. After 30 days, of the work is completed. How many additional men may be employed, so that the work may be compeleted in time, each man now working 9 hours a day ?

60
56
70
42

17. The average of five results is 46 and that of the first four is 45. The fifth result is :

1
10
12.5
50

18. A tap can fill a tank in 16 minutes and another can empty it in 8 minutes. If the tank is already half full, and both the taps are opened together, the tank will be:

filled in 12 min
emptied in 12 min
filled in 8 min
emptied in 8 min

19. At a game of billiards A can give B 15 points in 60 and A can give C 20 in 60. How many can B give C in a game of 90?

30 points
20 points
10 points
12 points

20. 729 ml. of a mixture contains milk and water in the ratio 7 : 2. How much more water is to be added to get a new mixture containing milk and water in ratio 7 : 3 ?

600 ml.
710 ml.
520 m.
none of these