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Question

Flash runs 114 times as fast as Zoom. If Flash gives Zoom a headstart of 60 m in a race, how far must the winning post be so that Flash reaches ahead of Zoom by 10 m?


A

350 m

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B

300 m

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C

385 m

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D

210 m

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E

220 m

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Solution

The correct option is

A

350 m



Ratio of the speeds of Flash and Zoom = 54:1=5:4

Thus, in a race of 5 m, Flash gains 1m over Zoom.

1 m is gained by Flash in a race of 5 m.

Beat distance + start distance = 70m

70 m will be gained by Flash in a race of (51×70)m=350m

Winning post must be 350 m away from the starting point.


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