21. Sam, Raj and Pam cycle everyday along the circular ring road. They take 6, 10 and 12 minutes, respectively, to take a complete round. If all of them start together at the same time from the same place, after how much time will all three of them meet at the same place again?
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Answer:
their lcm= 120 min/ 2 hours
Step-by-step explanation:
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