Five bells begin to toll together and toll respectively at intervals of 6, 7, 8, 9 and 12 second. How many times will they toll together in one hour, excluding the one at the start?
Answers
Answered by
4
✪||Question||✪
Five bells begin to toll together and toll respectively at intervals of 6, 7, 8, 9 and 12 second. How many times will they toll together in one hour, excluding the one at the start?
✪||Solution||✪
No. of second after bell rang together = LCM of 6, 7, 8, 9 and 12
No. of second after bell rang together = 504 second.
1 minute = 60 second
1 hour = 60 minutes
60 minutes = 3600 seconds
No. of times bell rang together in a hour 3600 seconds ÷ 504 seconds
7 times
No. of times bell rang together in a hour excluding one at start 7 times - 1 times
6 times
✪||Answer : 6 times ||✪
Similar questions