Question

Three bells toll at the interval of 6 , 15 and 20 respectively if all three bell toll together at 9am after how much interval they will together again?

Answer 1

Answer:

10 a.m

Step-by-step explanation:

This problem based on the concept of LCM.

Here we have to find LCM of interval 6, 15 and 20 minutes which indicates

after how long they all again toll together.

  LCM = 60

Hence bells wil toll together after 60 mins. that is at 10 a.m

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