Mathematics · Speed, Time and Distance
A and B start running from the same point at the same time in opposite directions on a circular race track whose length is 3240 m. If A runs at a speed of 10 m/s and they cross each other 3 minutes after starting, then what is B's speed (in m/s)?
- 18✓
- 27.5
- 39
- 48.5
Correct answer
8
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