In a 1 km race, A beats B by 50 m or 10 seconds. What is A’s time for the course?
Correct answer C. 190 seconds
Explanation
B covers 50 m in 10 seconds, so B's speed is 5 m/s and B's time is 1000 / 5 = 200 s. A's time = 200 − 10 = 190 seconds.
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