Question

Four bell ring at the intervals of 10,12,15,and 20 second respectively.if they start ringing together at 6 A.m.after how much minimum time will they ring again together?

Answer 1

Answer:

6.01 am

Step-by-step explanation:

Steps:

LCM of 10,12,15,20 second = 60 sec = 1min

So, after 1min, 6.01 am they 'll ring together