In a 600 meters race A beats B by 30 meters or 10 seconds. A’s time over the course is (in secs):
Explanation:
30 meters are covered by B in 10 seconds, hence 600 meters are covered by B in 10/30 × 600 = 200 seconds.
∴ Time taken by A = (200 – 10) = 190 seconds
Hence, option (b)
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