Mathematics · Time and Distance
A and B walk clockwise around a circular field, starting from a common point O. A takes 9 minutes to complete a round but restarts after 1 minute. B takes 11 minutes to complete a round but restarts after 3 minutes. How many minutes after they began would they meet again at point O?
- 129 minutes
- 239 minutes✓
- 338 minutes
- 430 minutes
Correct answer
39 minutes
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