Four alarms bells ring at an interval of 3,4,5,8minutes respectively. if they together rang at 6:00 am, at what time they will ring together again?
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it will ring together at 8:00am
take the lcm of 3,4 ,5,8
it is 120
that is 2hours
that is 6 am+2 h
=8am
take the lcm of 3,4 ,5,8
it is 120
that is 2hours
that is 6 am+2 h
=8am
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