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In a race of one kilometre, A gives B a ...

In a race of one kilometre, A gives B a start of 100 metres and still wins by 20 seconds. But if A gives B a start of 25 seconds, B wins by 50 metres. The time taken by A to run one kilometre is

A

17 seconds

B

`(500)/(29)` seconds

C

`(1200)/(29)` seconds

D

`(700)/(29)` seconds

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The correct Answer is:
B
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