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?