Question

The five hours are played for 10, 15, 25, 30 and 40 seconds respectively. If they play together at 8 in the morning, when will they play together again?​

Answer 1

Answer:

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Step-by-step explanation:

LCM of 10, 12 and 15 is 60. Thus after every 60 minutes they will ring together. Thus next they will ring at 9:30 AM.

Logic : After an hour, first bell rangs for 6th time, second bell rangs for 5th time and third bell rangs for 4th time.

HTH