Question
At 1.41 p.m., a car left Town T for Town U at an average speed of 78 km/h, while a truck left Town U for Town T at an average speed of 68 km/h. At 7.41 p.m., the two vehicles were 21 km apart. How far apart were the two towns?
3 m

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At 1.41 p.m., a car left Town T for Town U at an average speed of 78 km/h, while a truck left Town U for Town T at an average speed of 68 km/h. At 7.41 p.m., the two vehicles were 21 km apart. How far apart were the two towns?