Question

A bell rings every 15 seconds another bell rings every30seconds.at 3:00 pm the two bells ring simultaneously .At what time will the bells ring again at the same time?

Answer 1

Answer: This may help you

3:00:30 (Hour : Minutes : second)

Explanation:

Given:

Starting time = 3:00 PM

1st bell ring = every 15 second

2nd bell ring = every 30 second

Find:Times of both bell ring = ?

Calculation:

By taking LCM of 15 second and 30 second,we get exact time both bell rings together

LCM of 15 second and 30 second = 30 seconds

So, the bell will ring again after 30 seconds.

So, at 3:00:30 both bell ring again.