Question

Three bells ring at intervals of 10, 12 and 15 minutes, respectively. If they rang together at 9:34 a.m., then when will they again ring together? Answers should be well explained!​

Answer 1

They will ring together again after 60 minutes that is at 9.30 am . Because at the 60 th minute, first bell will be ringing for the 6th time, the second bell for the 5th time and the third bell for the 4th time. Actually 60 happens to be the LCM of 10,12 and 15

Answer 2

Answer:

They will ring together again after 60 minutes that is at 9.30 am . Because at the 60 th minute, first bell will be ringing for the 6th time, the second bell for the 5th time and the third bell for the 4th time. Actually 60 happens to be the LCM of 10,12 and 15

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