Question

Three bells toll at the intervals of 10, 15 and 24 minutes. All the three begin to toll together at 8A.M. At what time they will again toll together?
A. 10.45A.M.
B. 10A.M.
C. 9.25A.M.
D. 8.50A.M.

Answer 1

hay.... ....... .. ..........
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it is given that ..... ...... . .....
Three bells toll at the intervals
of 10, 15 and 24 minutes.
so.....
Lcm of 10 , 15 and 24
= 120 minutes
= 2 hour
it means that toll together
at reguler interval 2 hour
sO.. and
All the three begin to
toll together at 8A.M.
so next ti.e they will toll
8+ 2 = 10 A.M
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Answer 2

hay.... ....... .. ..........

◇◆◆◆◆◆◆◆◆◆◆◆◆◆

it is given that ..... ...... . .....

Three bells toll at the intervals

of 10, 15 and 24 minutes.

so.....

Lcm of 10 , 15 and 24

= 120 minutes

= 2 hour

it means that toll together

at reguler interval 2 hour

sO.. and

All the three begin to

toll together at 8A.M.

so next ti.e they will toll

8+ 2 = 10 A.M