Question

In a school the duration of a period in junior section is 40 minutes and the senior section is 1 hour. If the first bell for each section rings at 9 am, when will the two bells ring together again

Answer 1

Heya..

Solution:

Given,

The duration of a period in junior section is 40 minutes.

& The senior section is 1 hour or 60 minutes.

To find that,

when will be the two bells ring together again

LCM (60,40)

we get

=2×5×3×2×2

=120

.•. LCM of 60&40 is 120.

Hence, the two Bell will ring again together after 120 minutes.

▪HOPE ITS HELP!

▪MARK MY ANS AS BRAINLIEST IF ITS HELPFUL TO U!!

Answer 2

Answer:

1 hr = 60 mint

40 mint

A.T.Q

we have to find LCM of (60,40)

we get

=2*5*3*2*2

=120 mint

it means time will be 11:00 am