Question

Alarms of three clocks ring at the interval of 4 minutes, 8 minutes and 6 minutes respectively. All of them rang together at 8.00
a.M. Now, find the number of times they will ring together before 9.45
a.M.

Answer 1

Answer:

obviously all the three Bells toll together after an interval which is the multiple of 4 minutes, 6 minutes, 8 minutes.

LCM of 4,6,8min=24min

therefore,the time when they will next toll together =24min

hence,the number of times they will strike together in (9:45am-8:00am)105 min=(105*60)/24