Question:In a 30 m race A beats B by 22.5 m or 6 seconds.B's time over the course is : 

A 86 sec 
B 80 sec 
C 76 sec 
D None of these 

+ Answer
B 

+ Explanation
B runs` 45/2` m in 6 sec.

:. B covers 300 m in` (6 xx 2/45 xx 300) sec`

                           `= 80 sec`

+ Report

Irin Moni

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