Question

Three bells ring at the intervals
of 4, 5 and 6 minutes. If they ring
together at 7:00 am when will they
ring together next?
(A) 7:30 a.m. (B) 8.00 a.m.
(C) 7:50 a.m. D 7:40 am​

Answer 1

Answer:

$8:00 AM$

Step-by-step explanation:

It is Given that the Bells ring at intervals of $4$ ,$5$ $and$ $6$ $minutes$ respectively

In order to find the time after which they will ring together we must find the $LCM$ of the time intervals.

⇒$LCM(4,5,6)$

⇒$LCM=60$

∴They Ring together after $60$ $minutes$

⇒They will ring together next at $8:00 AM$