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 D29 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 (200m−171m)=29 m to A in the same race.