Question
The distance between City P and City Q was 640 km apart. A sports car travelled at an average speed of 90 km/h from City P to City Q. At the same time, a convertible travelled at an average speed of 70 km/h from City Q to City P. How much further did the sports car travel than the convertible when the sports car met the convertible on the way?
3 m

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The distance between City P and City Q was 640 km apart. A sports car travelled at an average speed of 90 km/h from City P to City Q. At the same time, a convertible travelled at an average speed of 70 km/h from City Q to City P. How much further did the sports car travel than the convertible when the sports car met the convertible on the way?