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A train travels 101.2 kmE, then 225.9 kmW, and finally 144.2 km E. The train takes 23.11 hours to make the entire trip. What

A train travels 101.2 kmE, then 225.9 kmW, and finally 144.2 km E. The train takes 23.11 hours to make the entire trip. What is the train's average velocity?

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