Question

Four bells are ringing at intervals of 12,16,24 and 36 minutes.they start ringing simultaneously at 12 O' clock.find the time when they will ring again together

Answer 1

for this you should find the lcm

lcm of 12,16,24,36  =  144

hence they will ring after 144 min
or 2.4 hrs

14:24 / 2:24

Answer 2

First u have to find the LCM

So the LCM of 12,16, 24 and 36 is 144
This means that the bells will  toll again at 144 minutes.

⇒  2.4 hrs ⇒ 2:24