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Question

In a race of 200 metres, B can give a start of 10 metres to A and C can give a start of 20 metres to B. What is the start that C can give to A in the same race ?

A
30 m
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B
10 m
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C
31 m
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D
29 m
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Solution

The correct option is D 29 m
Ratio of the distances covered by A and B =190:200=1710:1800
Ratio of the distances covered by B and C =180:200=1800:2000
Ratio of the distances covered by A and C =1710:2000=171:200
Hence, C will give a start of (200 m171 m)=29 m to A in the same race.

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