Question

four bells ring at intervals of 14 42 49 84 second respectively if bells ring together at 5 p.m. at what time will the four bells ring together next?

explain please​

Answer 1

4=2×2

6=2×3

8=2×2×2

14=2×7

LCM of 4,6,8,14=2×2×2×3×7=168 seconds

= Bells will ring again 2 minutes 48 seconds after 12 O'clock

=12 hours 2 minutes 48 seconds.