Question
At 1.12 p.m., a car left Town J for Town K at an average speed of 72 km/h, while a truck left Town K for Town J at an average speed of 61 km/h. At 9.12 p.m., the two vehicles were 21 km apart. How far apart were the two towns?
3 m

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At 1.12 p.m., a car left Town J for Town K at an average speed of 72 km/h, while a truck left Town K for Town J at an average speed of 61 km/h. At 9.12 p.m., the two vehicles were 21 km apart. How far apart were the two towns?