Question

Three bells ring after an interval of 15
minutes, 20 minutes and 25 minutes.
They ring simultaneously at 8:00 a.m.
At what time will they ring again,
simultaneously?
​

Answer 1

The time when they will ring every time = LCM of 15, 20 and 25 = 300 min = 5 hr

So, they will again ring at 1 pm.

HOPE THIS COULD HELP!!!

Answer 2

Answer:

hey mate ♦♦♦

At 1:00 p.m

Step-by-step explanation:

The prime factors of the given numbers:

15 = 3×5

20 = 2×2×5

25 = 5×5

So their LCM is :

5×5×2×2×3. = 300

300 minutes.

or

5 hours.

Hope it may help you.