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Q: In a 300 m race A beats B by 22.5 m or 6 seconds. B's time over the course is: 
A. 86 sec B. 80 sec
C. 76 sec D. None of these

Answer and Explanation

Answer:80 sec

Explanation:
B runs 45/2 m in 6 sec.

B covers 300 m in 6 x (2/45) x 300 sec = 80 sec.

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