Question

6. Six bells commence tolling together and toll at intervals of 2,4,6,8,10 and 12 seconds respectively. In 30 minutes, how many times do they toll together?​

Answer 1

Answer:

Since, LCM of 2,4,6,8,10 and 12 is 120. So, after each 120 seconds, they would toll together,

Hence, in 30 minutes, they would toll 30×60/120

=15 times

But then the question says they commence tolling together. So, they basically also toll at the beginning. So, total tolls together

=15+1=16

Answer 2

Explanation:

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