35. Six different bells in a tower doll at the intervals of 9 sec, 12 sec, 15 sec, 18 sec, 21 sec and 24 sec respectively. If all
of them toll at 6 am, the next time they toll together is:
(1) 7.42 am
(946.42 am
(3) 8.00 am
(4) 9.00 am
nate numbers have difference 3, is:
Answers
Answered by
4
Answer:
The right answer is 7.42 am
Answered by
2
Answer:
6:42 am
Step-by-step explanation:
All the bells toll in multiples of their respective timings.
That is, first bell at 9sec, 18 sec, .....
second at 12sec. 24sec,.......
.
.
.
.
.
So we take LCM of these numbers to find the next time of them tolling together.
LCM(9,12,15,18,21,24)=2520 seconds=2520/60 minutes=42minutes
Therefore, they toll again after 42 minutes
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