Question
At 12 p.m., a car left City Y for City Z at an average speed of 110 km/h while a truck left City Z for City Y at an average speed of 90 km/h. At 3.30 p.m., the two vehicles were 20 km apart. Find the distance between City Y and City Z.
3 m

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At 12 p.m., a car left City Y for City Z at an average speed of 110 km/h while a truck left City Z for City Y at an average speed of 90 km/h. At 3.30 p.m., the two vehicles were 20 km apart. Find the distance between City Y and City Z.