three bells toll at the interval 6 .15 and 20 minutes respectively.if the three bells tolls together at 9 am after how much interval they will toll together
Answers
Answered by
2
Step-by-step explanation:
6 = 2 x 3
15 = 3 x 5
20 = 2 x 2 x 5
LCM = 2^2 x 3 x 5
= 60
Therefore, the bells will toll again after 60 mins. That is, at 10 am.
Answered by
3
The L.C.M. of 6, 12, and 15 will give us the minutes after which the bells will
next toll together.
L.C.M. = 22 x 32 x 5
= 180
So, the bells will toll together after 180
min.
On converting into hours:
180/60 = 3 hours
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