Question

Four bells toll at intervals of 12,15,18and 36 minutes .All the four bells begin to toll at 11:00 am .At what time they again toll together

Answer 1

Answer:

2 pm

Step-by-step explanation:

The no. of minutes after which the bells will toll together is the LCM of 12,15,18,36

LCM(12,15,18,36)= 180 minutes

180 minutes= 3 hours

Thus, the bells will toll together at 11+3hrs= 2pm

Answer 2

lcm of 12,15,18and 36=160minutes
=2:40hours
11:00+2:40=1:40pm