Question

Six bells commence tolling together and toll at intervals of 2,4,6,8,10 and 12 seconds respectively. In
bozia 4) 16
30 minutes, how many times do they toll together?
1) 4
2) 10
3) 15
1​

Answer 1

Answer:

16

Step-by-step explanation:

Since, LCM of 2,4,810 and 12 is 120. So, after each 120 seconds, they would toll together,

Hence, in 30 minutes, they would toll

120

30×60

=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