On a string of red and blue lights, the red lights blink everyb3 seconds, and the blue lights blink every 5 seconds. How many times will they blink at the same time in one minute?

Question

Mathematics

Maren Gaines

27 April, 10:02

On a string of red and blue lights, the red lights blink everyb3 seconds, and the blue lights blink every 5 seconds. How many times will they blink at the same time in one minute?

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Answers (1)

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Madisyn Hill · Answer 1

When will they blink together?

what is the smallest number they both mutiply to

3*5=15

so every 15 seconds

so at 15, 30, 45, 60 seconds

so 4 times if you count the time exactly at 1 minute