Question

Four bells start ringing together . Il bells ringing at interval of 64,70,96 and 112 seconds respectively , after what interval of time will they ring together ?

Answer 1

four bells together rings after 6720 seconds

Answer 2

We have to take out LCM of 64,70,96 and 112

We got,
2 x 2 x 2 x 2 x 2 x 2 x 3 x 5 x 7 = 6720 seconds
If we convert it to minutes then it is 112 minutes

So, after 6720 seconds (112 minutes)  they will ring together
Hope This Helps You!