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Running around a track (km/hr)

  1. Jan 2, 2016 #1
    1. The problem statement, all variables and given/known data

    Chris runs round a track at a speed of 6 km/hour. Dave runs round the same track in a speed of 9 km/hour. When Chris has run 18 laps, how many laps has Dave run?

    2. The attempt at a solution

    Dave runs 1.5 times faster. So Dave will run 18 laps x 1.5 = 27 laps in the same time.

    Is this correct please?
  2. jcsd
  3. Jan 2, 2016 #2


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    Yes, that's correct.
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