In a 100 m race , A co

Question

In a 100 m race , A covers the distance in 36 seconds and B in 45 seconds . In this race A beats B by :

Options:

A . 20 m

B . 25 m

C . 22 .5 m

D . 9 m

Answer: Option A

Distance covered by B in 9 sec. = `(100/45 xx 9)`m = 20 m.

`:.` A beats B by 20 metres.

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