Three bells toll at intervals of 9, 12, 15 minutes respectively. If they toll together first time at 10:15 am. At what time they will next toll together?
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Complete Step-by-Step solution:
It is given that three bells tolls at the intervals of 9, 12, 15 minutes respectively.
We need to find out if they start tolling together after what time they next toll together.
LCM of 9, 12, 15 can be found as:
On doing factorization of 9, 12 and 15 we get,
9 = 3 x 3
12 = 2 x 2 x 3
15 = 5 x 3
LCM can be written as = 3 x 3 x 2 x 2 x 5 =180
So, the answer is 180.
If they start tolling together then it will rung after 180 minutes.
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