Question

Four bell rings at intervals of 8,12,16,20 minutes respectively .All four rang at 11a.m.When will they next ring together​

Answer 1

Answer:

LCM ( 8, 12, 18, and 20 ) = 360. so, after 360 minutes bells will ring together. so, bells will ring together at 4 pm.

Answer 2

Answer:

3 pm

Step-by-step explanation:

take lcm of 8,12,16,20

then convert the lcm into hours and add these hours to 11 am