Bell A rings every 5 minutes and Bell B rings every 6 minutes. The two bells rings together at 9.15am.at which time the two bells rings together again?

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Ivan Kurchenko asked Dec 9, 2022

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Bell A rings every 5 minutes and Bell B rings every 6 minutes. The two bells rings together at 9.15am.at which time the two bells rings together again?

Mathematics
college

Ivan Kurchenko asked Dec 9, 2022

by Ivan Kurchenko

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find the lcm of 5 and 6 which is 30mins
9:15am + 30 mins = 9:45am

they will ring again at 9:45am

Eric Legault answered Dec 13, 2022

by Eric Legault

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