4 Bells toll together at 9:00 am. They toll after 7, 8, 11 and 12 seconds respectively. How many times will they toll again in the next three hours?
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Answered by
1
Answer:
9:00 AM + LCM ( 7, 8, 11 & 12 )
⇒ 9:00 AM + 1848/60 Min = 9:00 AM +30.80 min
After every 1848 secs they will toll together.
So, The sequence will be 9:00 AM , 9:31 AM , 10 : 02 AM , 10:33 AM, 11:04 AM , 11: 35 AM…
Thus, in the 3 hours, the bells will toll together 5 times.
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Answered by
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Step-by-step explanation:
From given, we have,
Taking lcm(7,8,11,12)=1848
After every 1848 secs they will toll together.
In 3 hours there are 3600×3=10800 secs.
number of times the bell would toll =
1848
10800
=5
so they will toll together 5 times in the next 3 hours.
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