Question

Five bells commence tolling together and continue tolling at an interval of 3, 5, 6, 8 and 9 seconds respectively. How many times do they toll together in a hour?

Answer 1

take lcm of th given nos. tha twill be ans.

Answer 2

1 hour=60 min

60/3=20 times

there are 20 times toll together in a hour.

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