A red light flashes 5 times per minute whereas, the blue light flashes 6 times in 2 minutes at regular intervals. If both lights s

Question

A red light flashes 5 times per minute whereas, the blue light flashes 6 times in 2 minutes at regular intervals. If both lights start flashing at the same time, how many times do they flash together in each hour?
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Ximena · Answer

Answer: 60 times

Step-by-step explanation:

Per minute Seconds

Red : 5 12sec

Blue: 3 20 sec

LCM( 12,20)= 60sec

So they together flash in 60sec i.e.1min

Then they together flash in (1hour)

1min *60 = 60 times

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Raelynn · Answer

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