- A6 min
- B3 min
- C12 min
- D4.7 min
Step-by-Step Solution
In seconds: LCM(72, 90, 120) s min. (4.7 min just adds the three lap times.)
Answer: A) 6 min
Three cyclists need 1 min 12 s, 1 min 30 s and 2 min for one lap of a circuit. Starting together, after how many minutes are they all at the start again?
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