Question

The traffic lights at three different Road crossing is change every 48 seconds 72 seconds and 108 seconds respectively which change Simultaneously at 7 AM at what time will they change Simultaneously again?

Answer 1

Answer:

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L.C.M of 48, 72, 108 = 2 x 2 x 2 x 2 x 3 x 3 x 3 = 432 sec.

After 432 seconds, the lights change simultaneously.

432 second = 7 minutes 12 seconds

Therefore the time = 7 a.m. + 7 minutes 12 seconds

= 7:07:12 a.m.

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Answer 2

Step-by-step explanation:

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