Three bells toll together at intervals of 9, 12, 15 minutes. If they start tolling together, after what time will they next toll together?
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180 is the answer by taking lcm
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Answer:after 3 hours or 180 minutes
Step-by-step explanation: LCM of 9 12 and 15
9= 3 x 3
12= 3 x 2 x 2
15= 5 x 3
= 180
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