Answer :
Great question !
The least common multiple of 8, 9, 12, and 15 is 360.
The bells will coincide again after 360 minutes = 6 hours.
That's 9:00 PM .
The least common multiple of 8, 9, 12, and 15 is 360.
The bells will coincide again after 360 minutes = 6 hours.
That's 9:00 PM .