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Satterly Satterly
  • 25-09-2015
  • Mathematics
Answered

A red light flashes every 14 minutes. A blue light flashes every 24 minutes. When will the two lights flash together again, if they last flashed together at 8 AM?

Verified Answer :

AL2006
AL2006 AL2006
  • 25-09-2015


The least common multiple of 14 and 24 is 168.

The lights flash together every 168 minutes.

168 minutes = 2 hours 48 minutes.

If they flashed together at 8 AM, then they'll flash
together again at 10:48 AM.

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