Four bells toll at 4,7,12 and 84seconds.The bell toll together at 5o'c

1.	Four bells toll at 4,7,12 and 84seconds.The bell toll together at 5o'clock.When will they again toll together?
Answer» ONG>Answer: They will toll together for a 'common MULTIPLE' of (4,7,12,84), which is the l.c.m of these numbers. 4== 2^2 7 == 7 12 = 2^2 * 3 84 = 12 * 7 = 2^2 * 3 * 7 l.c.m(4,7,12,84) = 2^2 * 3 * 7 = 84 s 84 s = 1 min 24 sec Hence they will toll together 84 SECONDS after 5 o'clock or 5:01:24 hrs ( 1 min 24 sec past 5 o'clock) 28 mins = 2860 = 1680 sec 84 sec== toll 1 TIME 1680 sec== X times X = 20 times Hence, They toll together at 5:01:24 hrs In 28 mins they toll (together) 20 times. MARK AS BRAINLIEST AND GIVE THANKS*

Four bells toll at 4,7,12 and 84seconds.The bell toll together at 5o'clock.When will they again toll together?

Answer» ONG>Answer:

They will toll together for a 'common MULTIPLE' of (4,7,12,84), which is the l.c.m of these numbers.

4== 2^2

7 == 7

12 = 2^2 * 3

84 = 12 * 7 = 2^2 * 3 * 7

l.c.m(4,7,12,84) = 2^2 * 3 * 7 = 84 s

84 s = 1 min 24 sec

Hence they will toll together 84 SECONDS after 5 o'clock or 5:01:24 hrs ( 1 min 24 sec past 5 o'clock)

28 mins = 28*60 = 1680 sec

84 sec== toll 1 TIME

1680 sec== X times

X = 20 times

Hence,

They toll together at 5:01:24 hrs

In 28 mins they toll (together) 20 times.