Question
At 1.38 p.m., a car left Town L for Town M at an average speed of 79 km/h, while a truck left Town M for Town L at an average speed of 78 km/h. At 7.38 p.m., the two vehicles were 18 km apart. How far apart were the two towns?
3 m

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At 1.38 p.m., a car left Town L for Town M at an average speed of 79 km/h, while a truck left Town M for Town L at an average speed of 78 km/h. At 7.38 p.m., the two vehicles were 18 km apart. How far apart were the two towns?