Two trains are on separate but parallel tracks running east and west. One has a speed of 90 km/h, the other 80 km/h. Initially, the trains are 5 km apart and are approaching each other. How long will it take the two trains to have the same position along the east-west direction?
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Two trains are on separate but parallel tracks running east and west. One has a speed of 90 km/h, th...
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