In a 100 m race A runs at a speed of 5 3 If A gives a start of 4 m to B and still beats him by 12 se...........

Quantitative Aptitude (CDS) Time & distance

In a 100 m race, A runs at a speed of 5 / 3 . If A gives a start of 4 m to B and still beats him by 12 seconds, what is the speed of B?

5 / 4 m/s

7/5 m/s

4/3 m/s

6/5 m/s

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Explanation:

Time taken by A to cover 100 m = 100/5 × 3 = 60 s
Time taken by B to cover (100 − 4)m = 60 s + 12 s
Time taken by B to cover 96 meter = 72 s
Speed of B = 96/72 = 4/3 m/s

By: Munesh Kumari

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In a 100 m race A runs at a speed of 5 3 If A gives a start of 4 m to B and still beats him by 12 se...........

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Explanation:

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