Question

three bells toll at intervals of 15 minuts 10 minutes and 20 minutes if they toll together at 11.00 a.m.when next do they toll together again​

Answer 1

ANSWER:

Take out the L.C.M of 15 10 and 20 minutes

The L.C.M will be 60min because 15 10 and 20 are also represented in minutes.

So 60 mins = 1 hour

so we will add 1 in 11

so it will be 12 hrs

so the final answer will be:

At 12noon the bells will toll together again