Question

Three bells toll at intervals of 9, 12 and 15 minutes.
If they start tolling together, after what time will they toll next together?​

Answer 1

Answer:

180 minutes (3 hrs(

Step-by-step explanation:

take lcm

Answer 2

Answer:

Given that three bells toll at intervals of 9,12,15 minutes.

Prime factorization of 9 = 3 * 3

Prime factorization of 12 = 2 * 2 * 3

Prime factorization of 15 = 3 * 5

LCM(9,12,15) = 3 * 3 * 2 * 2 * 5

                    = 180.

Therefore the bells will ring together after 180 minutes (or) 3 hours.

Hope this helps!