Question
At 7.34 a.m., a car left Town C for Town D at an average speed of 81 km/h, while a truck left Town D for Town C at an average speed of 69 km/h. At 11.34 a.m., the two vehicles were 21 km apart. How far apart were the two towns?
3 m

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At 7.34 a.m., a car left Town C for Town D at an average speed of 81 km/h, while a truck left Town D for Town C at an average speed of 69 km/h. At 11.34 a.m., the two vehicles were 21 km apart. How far apart were the two towns?