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Math and Mental Ability Civil Services Exam (CSAT)

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In a 500 metres race, B starts 45 metres ahead of A, but A wins the race while B is still 35 metres behind. What is the ratio of the speeds of A to B assuming that both start at the same time?

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25: 21

25: 20

5:3

5:7

Explanation:

In unit time when A travels = 500 metres
B travels = 420 metres
∴Ratio of their speeds = 500 : 420 = 25:21

By: Amit Kumar

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