Aptitude Questions - 1

1. The average weight of 8 person's increases by 2.5 kg when a new person comes in place of one of them weighing 65 kg. What might be the weight of the new person?

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   85kg

2. The difference between a two-digit number and the number obtained by interchanging the digits is 36. What is the difference between the sum and the difference of the digits of the number if the ratio between the digits of the number is 1 : 2 ?

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   8

3. Three candidates contested an election and received 1136, 7636 and 11628 votes respectively. What percentage of the total votes did the winning candidate get?

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   57%

4. In a certain store, the profit is 320% of the cost. If the cost increases by 25% but the selling price remains constant, approximately what percentage of the selling price is the profit?

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   70%

5. A pole 17.5 m high casts a shadow of length 40.25 m. The height of the building, which casts a shadow of length 28.75 m under similar conditions will be:

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   12.5

6. A pole 17.5 m high casts a shadow of length 40.25 m. The height of the building, which casts a shadow of length 28.75 m under similar conditions will be:

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   20m

7. A box contains 2 white balls, 3 black balls and 4 red balls. In how many ways can 3 balls be drawn from the box, if at least one black ball is to be included in the draw?

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   64

8. Find the odd man out: 10, 14, 16, 18, 21, 24, 26

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   21

9. Each problem consists of three statements. Based on the first two statements, the third statement may be true, false, or uncertain.
a)Joe is younger than Kathy.
b)Mark was born after Joe.
c)Kathy is older than Mark.
If the first two statements are true, the third statement is

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   True

10. Two trains, each 100 m long, moving in opposite directions, cross each other in 8 seconds. If one is moving twice as fast the other, then the speed of the faster train is:

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   30km/hr

11. A man takes twice as long to row a distance against the stream as to row the same distance in favour of the stream. The ratio of the speed of the boat (in still water) and the stream is:

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   3:1

12. At what time between 5.30 and 6 will the hands of a clock be at right angles?

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   43 min

13. Find out the wrong number in the given sequence of numbers.
25, 36, 49, 81, 121, 169, 225

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   36

14. A takes twice as much time as B or thrice as much time as C to finish a piece of work. Working together, they can finish the work in 2 days. B can do the work alone in:

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   6Days

15. 15. 8, 7, 11, 12, 14, 17, 17, 22, (....)

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   20

16. (256)0.16 x (256)0.09 = ?

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   4

17. A wheel that has 6 cogs is meshed with a larger wheel of 14 cogs. When the smaller wheel has made 21 revolutions, then the number of revolutions mad by the larger wheel is:

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   9

18. Two pipes can fill a tank in 20 and 24 minutes respectively and a waste pipe can empty 3 gallons per minute. All the three pipes working together can fill the tank in 15 minutes. The capacity of the tank is:

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   120

19. 8 litres are drawn from a cask full of wine and is then filled with water. This operation is performed three more times. The ratio of the quantity of wine now left in cask to that of water is 16 : 65. How much wine did the cask hold originally?

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   24 liter