Question

there are 4 bells which toll at interval of 3,7,12,14 secs .the four bells begin to toll at 12 o clock.when they will next toll together and how often they do so in 14 min.

Answer 1

Answer:

12:01:24 o clock and bell will ring 10 times in 14 min

Step-by-step explanation:

taking LCM of 3,7,12,14 we get 84

then all bell will ring together at 84 sec interval

add 84 sec to 12 o clock we get the time

now we convert 14 min in sec we get 840 sec

and bell will ring together at intervals of 84 sec

so bell will ring 10 times in 14 min