Question
At 12 p.m., a car left City H for City J at an average speed of 100 km/h while a van left City J for City H at an average speed of 70 km/h. At 4.30 p.m., the two vehicles were 30 km apart. Find the distance between City H and City J.
3 m

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At 12 p.m., a car left City H for City J at an average speed of 100 km/h while a van left City J for City H at an average speed of 70 km/h. At 4.30 p.m., the two vehicles were 30 km apart. Find the distance between City H and City J.