An air horn goes off every 48 seconds,another every 80 seconds. At 5:00 pm the two go off simultaneo

Discussion in 'Calculator Requests' started by math_celebrity, Feb 26, 2020.

  1. math_celebrity

    math_celebrity Administrator Staff Member

    An air horn goes off every 48 seconds,another every 80 seconds. At 5:00 pm the two go off simultaneously. At what time will the air horns blow again at the same time?

    We want to find the least common multiple of (48, 80). So we type this in our search engine, and we get:
    240.

    So 240 seconds is our next common meeting point for each air horn.

    When we type 240 seconds into our search engine, we get 4 minutes.

    We add the 4 minutes to the 5:00 pm time to get 5:04 pm.
     

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