Question:A can run 22.5 m while B runs 25 m.In a kilometer race B beats A by : 

A 100 m 
B `111 1/9 m` 
C 25 m 
D 50 m 

+ Answer
A 

+ Explanation
When be runs 25 m, A runs `45/2 m`

When B runs 1000 m, A runs` (45/2 xx 1/25 xx 1000) m`

             `= 900 m.`

:. B beats A by 100 m.

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Irin Moni

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