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

Correct Answer: 100 m

Explanation:

When B runs 25 m, A runs 45/2 m


 


When B runs 1000 m, A runs (45/2*1/25*1000)m = 900 m.


 


B beats A by 100 m.


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