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Suppose that a Ferrari and a Porsche begin a race with a moving start, and each moves with constant speed. One lap of the track is 2Km. The Ferrari laps that Porsche after the Porsche has completed 9 laps. If the speed of the Ferrari has been 10km/h less, the Porsche would have traveled 18 laps before being overtaken. What were the speeds of the two cars?

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