The traffic lights at three different road crossing change after every 48 seconds ,72 Seconds,and 108 seconds ,if they starting change simultaneously at8 a.m. ,after how much time will they again simultaneously?
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Answer:Given that traffic light at three different road crossing change after every 48 seconds,72 seconds and 108 seconds respectively. Hence,after 7 min and 12 seconds they will blink simultaneously.
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Step-by-step explanation:
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Answer:
They will ring again at 08:07:12 a.m.
Step-by-step explanation:
The time at which they will ring together next time can be calculated by finding the LCM of 48, 72 and 108. It is 432 seconds.
432 seconds = 7 minutes and 12 seconds.
∴ The time at which they will ring again is 8 a.m. + 7 minutes and 12 seconds = 08:07:12 a.m.
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