Question 43

Five bells begin to toll together and toll respectively at intervals of 6, 7, 8, 9 and 12 seconds. How many timesthey will toll together in one hour?

Name: Five bells begin to toll together and toll respectively at intervals of 6, 7, 8, 9 and 12 seconds. How many timesthey will toll together in one hour?
Uploaded: 2026-04-27T20:05:28.157442+05:30
Duration: 3 min 9 s
Description: Five bells begin to toll together and toll respectively at intervals of 6, 7, 8, 9 and 12 seconds. How many timesthey will toll together in one hour?

Solution

L.C.M. of (6,7,8,9,12) = 504

Thus, after every 504 seconds = 8.4 minutes, the bells toll together.

=> Number of times, they will toll together in an hour = $$\frac{60}{8.4}=7.14=$$ 7 times

=> Ans - (D)

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