Question
The distance between City Y and City Z was 900 km apart. A bus travelled at an average speed of 100 km/h from City Y to City Z. At the same time, a van travelled at an average speed of 80 km/h from City Z to City Y. How much further did the bus travel than the van when the bus met the van on the way?
3 m

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The distance between City Y and City Z was 900 km apart. A bus travelled at an average speed of 100 km/h from City Y to City Z. At the same time, a van travelled at an average speed of 80 km/h from City Z to City Y. How much further did the bus travel than the van when the bus met the van on the way?