Question
In a 500 m race , the ratio of the speeds of two contestants A and B is 3 : 4 A has a start of 140 m. Then , A wins by :
Answer: Option C
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To reach the winning post A will have to cover a distance of(500 - 140) m i.e. 360 m.
while A cover 3 m., B cover 4 m.
while A covers 360 m , B cover `(4/3 xx 360)` m = = 480 m.
Thus when A reached the winning post , B covers 480 m and therefore remains 20 m. behind .
`:.` A wins by 20 m.
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