Question

Six Bells commence tolling together and toll at interval of 2 4 6 8 10 12 minutes in 30 hours how many times do they toll together

Answer 1

Step-by-step explanation:

1. lcm of 2 4 6 8 10 12 is 120
2. it means after 120 minutes(2hours) they all ringing together.
3. in 30 hours they will ring together 15 times each after 2 hours.
4. as they ring once initially and after that total 15 times.
5. so answer is 1+15=16.
6. 16 times is correct answer.