Question

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

Answer 1

Answer:

Answer is 16.

Step-by-step explanation:

Six bells commence tolling together and toll at intervals of 2, 4, 6, 8, 10, 12 minutes respectively.

Hence, using LCM of the given numbers which is 120 we conclude that bell will toll together after 120 seconds = 2 minutes.

In 30 minutes they will toll together in begin math size 16px style open parentheses 30 over 2 close parentheses equals 15 end style and 1 (at the starting).

Hence, total number of bells together is 15 + 1 = 16