Aptitude

Aptitude Questions and Answers

1

P and Q take part in 100 m race. P runs at 6kmph. P gives Q a start of 8 m and still beats him by 8 seconds. The speed of Q is:

a

6.14 kmph

b

15.2 kmph

c

5 kmph

d

4.86 kmph

correct answer d

`speed =( 6**5/18)m/sec) = (30/18) m/sec`

Time taken by P to cover 100 m = `(100 ** 18/30)`m/sec =60 sec

Time taken by Q to cover 92 m = (60 + 8) = 68 sec.

Q's speed =`("Distance"/"Time"**18/5) kmph =(92/68 ** 18/5)` kmph = 4.86kmph.

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