Three bells toll at intervals of 12 minutes, 15 minutes and 18 minutes respectively. If they start tolling together, after what time will they next toll together?
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Answer:
After 180 minutes that is 3 hours.
Step-by-step explanation:
Since all the toll times have to coincide. It is similar to finding the LCM of 12,15 and 18 minutes.
LCM of 12,15 and 18 = 180.
Hence 180 minutes or 3hours later the bells will toll together.
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