Question
At 9.20 a.m., a car left Town M for Town N at an average speed of 76 km/h, while a truck left Town N for Town M at an average speed of 65 km/h. At 4.20 p.m., the two vehicles were 21 km apart. How far apart were the two towns?
3 m

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At 9.20 a.m., a car left Town M for Town N at an average speed of 76 km/h, while a truck left Town N for Town M at an average speed of 65 km/h. At 4.20 p.m., the two vehicles were 21 km apart. How far apart were the two towns?