Question
At 9.51 a.m., a car left Town Y for Town Z at an average speed of 74 km/h, while a truck left Town Z for Town Y at an average speed of 70 km/h. At 4.51 p.m., the two vehicles were 20 km apart. How far apart were the two towns?
3 m

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At 9.51 a.m., a car left Town Y for Town Z at an average speed of 74 km/h, while a truck left Town Z for Town Y at an average speed of 70 km/h. At 4.51 p.m., the two vehicles were 20 km apart. How far apart were the two towns?