Question

Three bells are ringing continuously at intervals 30, 36 and 45 minutes respectively. At what time will they ring together again, if they ring simultaneously at 8:00 am?

Answer 1

LCM of 30, 36, 45 = 180 = 3hr

the bell will ring together after 3 hr. from initial .

so they will ring together after = 8:00am + 3:00hr= 11 am

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