Question

Four bells ring at intervals of 3, 7 , 12 and 14 minutes respectively. All four rang together at 4:00a.m. At what time will they ring together again?

Answer 1

Basically ur just looking for the LCM (lowest common multiple) of all of these numbers.

3,7,12,14....lowest number that all 4 of these numbers go into evenly is 84.

so they will ring together next in 84 minutes (1 hr 24 minutes) making it 5:24 a.m.