Question

Four bells begin to toll after 3,8,20,24 seconds respectively. if they strike together at 12 noon they will strike together again at

Answer 1

LCM of 3,8,20,24 is 120.
therefore 120 min=2 hours
so the bells will ring together at 2pm
Guess it is correct.

Answer 2

3:- 3*1
8:- 2*2*2
20:- 2*2*5
24:- 2*2*2*3

LCM= 2*2*2*3*5*1.
Therefore, LCM= 120 secs= 2mins.
So, they will strike together again at 12:02pm.
Hope this helps you.