Four bells ring at intervals of 24, 36, 45 and 54 seconds respectively – McqOptions

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1.	Four bells ring at intervals of 24, 36, 45 and 54 seconds respectively. If they all rang together at 9 am, when will they next ring together?
A.	9 : 12 am
B.	9 : 06 am
C.	9 : 18 am
D.	9 : 24 am
Answer» D. 9 : 24 am

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