Question

Four bells begin tolling at same time and continue at interval of 15 20 25 30 seconds respectively. At what interval of time will bells be tolling together?​

Answer 1

Answer:

The time interval between simultaneous tolling of the bells = LCM(10, 15, 20, 30) seconds =

60 seconds = 1 minute.

Hence, the bells will toll together again for the first time after 10:00 am at 10:01 am.

Answer 2

The time interval between simultaneous tolling of the bells = LCM(10, 15, 20, 30) seconds = 60 seconds = 1 minute

Hence, the bells will toll together again for the first time after 10:00 am at 10:01 am.