Running around a track (km/hr)

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SUMMARY

In the discussion, Chris runs around a track at a speed of 6 km/hour while Dave runs at 9 km/hour. When Chris completes 18 laps, Dave, running 1.5 times faster, completes 27 laps. The calculation confirming that Dave runs 1.5 times the distance in the same time frame is validated as correct.

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Homework Statement


[/B]
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?
 
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Yes, that's correct.
 
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