Two athletes start together from the same point on a 600 m circular track and run in the same direction at 4 m/s and 6 m/s. After how many minutes do they first meet?
Correct answer B. 5 minutes
Explanation
In the same direction the relative speed is 6 − 4 = 2 m/s. The faster gains a full lap of 600 m in 300 seconds = 5 minutes.
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