Bissoy.com
Doctors Medicines MCQs Q&A

Six bells toll together at a certain time and after that each keeps on tolling at an interval of 5, 10, 15, 20, 25, 30 seconds. After how many seconds will they toll together again?

Six bells toll together at a certain time and after that each keeps on tolling at an interval of 5, 10, 15, 20, 25, 30 seconds. After how many seconds will they toll together again? Correct Answer 300

Given:

Six bells toll together at a certain time and after that, each keeps on tolling at an interval of 5, 10, 15, 20, 25, 30 seconds

Concept:

We can find after how many seconds will the six bells toll together by finding the LCM of 5, 10, 15, 20, 25, 30 

Calculation:

LCM (5, 10, 15, 20, 25, 30) = 300

∴  After 300 seconds the six bells toll together

Related Questions

Five bells begin to toll together at intervals of 9 seconds, 6 seconds, 4 seconds, 10 seconds and 8 seconds respectively. Starting together, how many times will the bells toll together in a span of 1 hour?
Six bells begin to toll together and toll, respectively, at intervals of 3, 4, 6, 7, 8 and 12 seconds. After how many seconds, will they toll together again?
Six bells begin to toll together and toll respectively at intervals of 5, 6, 10, 12,15, and 18 seconds. After how many second will they toll together again?
Five bells begin to toll together and toll respectively at intervals of 6, 7, 8, 9 and 12 seconds. After how many seconds will they toll together again ?
Four bells begin to toll together and toll respectively at intervals of 6, 7, 8 and 9 seconds. In 1.54 hours, how many times do they toll together and in what interval (seconds)?
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?
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?
Six bells commence tolling together and toll at intervals 2, 4, 6, 8, 10 and 12 seconds respectively. In 30 minutes, how many times do they toll together?
Six bells commence tolling together and toll at the intervals of 2, 4, 6, 8, 10 and 12 seconds respectively. In 30 minutes, how many times do they toll together?
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 ?