Question
At 1.31 p.m., a car left Town B for Town C at an average speed of 80 km/h, while a truck left Town C for Town B at an average speed of 71 km/h. At 6.31 p.m., the two vehicles were 20 km apart. How far apart were the two towns?
3 m

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At 1.31 p.m., a car left Town B for Town C at an average speed of 80 km/h, while a truck left Town C for Town B at an average speed of 71 km/h. At 6.31 p.m., the two vehicles were 20 km apart. How far apart were the two towns?