Question

Six bells commence tolling together and toll at intervals of 2, 4, 6, 8 10 and 12
seconds respectively. After how much time will they toll together ? In 30
minutes, how many times do they toll together (excluding the one at start)?

Answer 1

The least common multiple (LCM) of 2, 4, 6, 8, 10, and 12 is 120. Thus, the bells toll together every 120 seconds (or 2 minutes), so in 30 minutes they will toll simultaneously 30/2 = 15 times.

Hope it's helpful dear.........

Answer 2

Answer:

LCM is 120....bells trolls together every 2 mins.....so in 30 mins they will troll 30/2=15 times