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Three bells ring at the interval of 20 minutes, 30 minutes and 40 minutes. When will they ring together if they ring together at 9:45 am? Plz answer the question
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Dec 28, 2019
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Three bells ring at the interval of 20 minutes, 30 minutes and 40 minutes. When will they ring together if they ring together at 9:45 am? Plz answer the question
Mathematics
middle-school
PrimeSeventyThree
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The time they will ring together is given by the Lowest Common Multiple of 20, 30 and 40 which is 120 minutes
So they'll ring together at 9.45 am + 120 minutes
= 9.45 + 2 hours = 11.45 am Answer
Nahshon
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Dec 30, 2019
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So, they'll ring together again in 120 minutes.
120 min = 2 h
9:45 + 2:00 =
11:45
Ericfranzee
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Jan 3, 2020
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