Question
At 8.11 a.m., a car left Town Y for Town Z at an average speed of 77 km/h, while a truck left Town Z for Town Y at an average speed of 67 km/h. At 1.11 p.m., the two vehicles were 21 km apart. How far apart were the two towns?
3 m

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At 8.11 a.m., a car left Town Y for Town Z at an average speed of 77 km/h, while a truck left Town Z for Town Y at an average speed of 67 km/h. At 1.11 p.m., the two vehicles were 21 km apart. How far apart were the two towns?