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

A 20 m 
B 25 m 
C 22.5 m 
D 9 m 

+ Answer
A 

+ Explanation
Distance covered by in 9 sec.

`= (100/45 xx 9) m`

`= 20 m`

:. A beats B by 20 metres.

+ Report

Irin Moni

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