Question

Three bells toll at intervals of 9,12,15 minutes respectively. if they

start tolling together ,after how many hours will they next toll

together?​

Answer 1

Answer:

u should take the lcm(lowest common multiple)

Step-by-step explanation:

they will toll again with in 180 minutes that is 3 hrs

Answer 2

Answer:

180 minutes.

Step-by-step explanation:

9 = 3 x 3 = 32

12 = 2 x 2 x 3 = 2^2 x 3 15 = 3 x 5 => LCM (9, 12, 15) = 22 x 32 x 5 = 180 => the bells will toll together after 180 minutes.

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