Question

three bells are ringing continuously at 24 , 30 and 36 minutes respectively. At what time will they ring together again if they ring simultaneously at 9am?
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Answer 1

Answer:

We are given that Three bells are ringing continuously at intervals of 30,36 and 45 minutes respectively. So after 180 minutes they ring together . So, after 3 hours they ring together. Therefore they all ring together again if they ring simultaneously at 8 a.m. at 11:00 a.m.