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In a Km race A beats B by 25 m or 5 sec. Then find out the time taken by A to complete the race.

3 minutes 15 seconds
4 minutes 20 seconds
2 minutes 30 seconds
5 minutes 10 seconds

Correct Answer: 3 minutes 15 seconds

Explanation:

B runs 25 m in 5 seconds.
∴ B's time to cover 1 Km = 5 x 100 / 25 = 200 sec
A's time to cover one Km = 200 - 5 = 195 seconds
= 3 minutes 15 seconds.

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