three bells toll together at 3 a.m. the first bell tool every 10 seconds the second tolls every 15 seconds and third tolls every 20 seconds .at what time will the three bells toll toll together next time
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Answered by
1
Step-by-step explanation:
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
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Answered by
2
Answer: the bell will ring at 10:05 a.m.
Step-by-step explanation:
we have to find the lcm (lowest common multiple)of 15, 20 , 25 to determine the next time they will ring
15 , 20 , 25 2
15 , 10 , 25 2
15 , 5 , 25 3
5 , 5 , 25 5
1 , 1 , 5 5
1 , 1 , 1
the lcm of 15, 20 , 25 =2 x 2 x 3 x 5 x 5 = 300 seconds later
300 seconds = 5 minutes
the bell will ring at 10:05 a.m.
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