Full solution: ?In each of the following exercises, set up an equation or inequality and
Chapter 4, Problem 38(choose chapter or problem)
In each of the following exercises, set up an equation or inequality and solve the problem. Be sure to indicate clearly what quantity your variable represents. Round to the nearest tenth where necessary.
Two trains leave two cities that are 400 km apart. They both leave at 11:00 A.M. traveling toward each other on parallel tracks. If one train travels at 70 kph and the other travels at 90 kph, at what time will they pass each other?
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