Three bell rings at an interval of 15, 20, 30 minutes. If all the bell rings at 2 pm together at what time will they ring together again?
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Three bell rings at an interval of 15, 20, 30 minutes. If all the bell rings at 2 pm together at what time will they ring together again?
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They have rung together once at 2pm
The should ring together again after amount of time when there multiple is the same what are we talking about here is LCM so taking the LCM which is 60 we should ring at 3 p.m. again
Answer:
The time of the bell rings at intervals= 15,20,30 minutes
If all bells ring together at =2 pm
So the time when they ring together will be=
LCM of 15,20,30 = 2×2×3×5=60
it means after 60 minutes or 1 hour they are will ring together .
I hope ,it is helpful for you . ️