niqueval niqueval
  • 21-02-2017
  • Mathematics
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two neon lights are turned on at the same time. One blinks every 4 seconds and the other blinks every 6 seconds. In 60 seconds, how many times will they blink at the same time?

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zhduch
zhduch zhduch
  • 21-02-2017
From 1-60, 4 and 6 a few common multiples. Find those multiples, which are
12, 24, 36, 48, 60.
So in 60 seconds, they blink together 5 times.
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