Question

three bells ring at the interval of 9 ,12 and 18 minutes .if they all ring together at 5 pm, at what time they will ring together again

Answer 1

Answer:

5:36 pm

Step-by-step explanation:

1) If first bell rings in 9 min. second one in 12 min. and third one in 18 min then the time the will ring together will be their LCM.

2) Their LCM comes out to be 36. So they will ring together in 36 min.

3) So they will ring together at 5:00 pm + 36 min. i.e. 5:36 pm

Hope it helps