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A train travels 50 km/h south for 2 hours. Then the train
travels north at 75 km/h for 5 hours. Where is the train now
relative to its starting position?

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Stam15id
The train traveled 100km (50x2) down and then 375km (75x5) up. So the train is 275km (375-100) up from where it started. 

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