Three bells ring at intervals of 6, 8 and 12 minutes. If they ring together at 8:00 a.m., at what time will they next ring together?
A8:24 a.m.CORRECT
B8:12 a.m.
C9:12 a.m.
D8:48 a.m.
Common EntranceMathematicsLCM
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Why the answer is A, and why the others tempt you.
The bells ring together again after the lowest common multiple of 6, 8 and 12, which is 24 minutes: 8:00 + 24 minutes = 8:24 a.m.
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