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Multiplication

One bell ring...

Question

One bell rings every 8 seconds and the other one rings every 16 seconds starting at 0 seconds. When will they ring together next?

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Solution

Multiples of 8 = 8,16,24,32,40,48,56,64….
Multiples of 16 = 16,32,48,64,80,96
The bells will ring at the least common multiple of 8 and 16.
So starting from 0 the bells will ring after 16 seconds.

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