Three bells toll at intervals of 12 seconds, 16 seconds and 20 seconds respectively. If they all
toll together at 7 a.m., when will they all toll together again?
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Answer:
7:04 a.m.
Step-by-step explanation:
first LCM of 12,16,20=240second
240sec=4 min
7 :00a.m. +4 min =7:04 a.m
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