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  1. In a 250 m race, the ratio of speeds of A and B is 1 : 2, If A has a start of 140 m, then A wins by how many metres ?
    1. 45 m
    2. 15 m
    3. 25 m
    4. 30 m
Correct Option: D

To reach the winning post, A has to cover (250 - 140)m = 110 m
From the the ratio of 1 : 2 ,
When A covers 1m, then B covers 2 m.
When A covers 110 m, then B covers
( 2 x 110)m = 220 m
∴ A wins by (250 - 220) = 30 m


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