Question
At 12 p.m., a car left City B for City C at an average speed of 100 km/h while a van left City C for City B at an average speed of 80 km/h. At 3.15 p.m., the two vehicles were 20 km apart. Find the distance between City B and City C.
3 m

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At 12 p.m., a car left City B for City C at an average speed of 100 km/h while a van left City C for City B at an average speed of 80 km/h. At 3.15 p.m., the two vehicles were 20 km apart. Find the distance between City B and City C.