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OpenStudy (anonymous):
A bell rings every 2 hours, a second bell rings every 3 hours, and a third bell rings every 4 hours. If all 3 bells ring at 9:00 AM., at what time will all 3 bells next ring?
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OpenStudy (anonymous):
9 pm
OpenStudy (anonymous):
1/2+1/3+1/4 or the common denominator which all 3 numbers are factors of is 12 thus 12 hours after the beginning (9PM) they will all ring together.
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