Question

Five bells commence tolling gogether and toll at intervels of 2,5,6,8 and 9 seconds respectively. How many times do they toll together in a hour ?

Answer 1

Step-by-step explanation:

They toll together at the zeroth second.

The next time they toll together = LCM(2,5,6,8,9) = 360 seconds = 6 minutes

Every 6 minutes, they toll together.

In an hour(60 mins), they toll together (60/6)+1 = 11 times

1 is added because they toll at the zeroth second. 0,6,12,18,24,30,36,42,48,54,60

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Answer 2

Answer:

your answer is 16 times hope this helps you please mark me as the brainliest

Step-by-step explanation:

Firstly we will find the LCM of 3, 6, 9, 12 15 is 180.

So, after each 180 seconds, they would toll together.

Hence, in 45 minutes, they would toll  = 15 times

According to the question,"they commence tolling together". So, they basically also toll at the "beginning" which means at second.

So, total tolls together = 15+1 = 16 times.