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Back to 4.2 Solve Applications with Systems of Equations

4.2 Exercise 3

Avg difficulty 2.5

An express train and a local train leave Pittsburgh to travel to Washington, D.C. The express train can make the trip in four hours and the local train takes five hours for the trip. The speed of the express train is 12 miles per hour faster than the speed of the local train. Find the speed of both trains.
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OpenStax Intermediate Algebra 2e, 4.2 Solve Applications with Systems of Equations, exercise 3

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Adapted from Intermediate Algebra 2e © 2020 Rice University. Licensed under CC BY 4.0. Source: Intermediate Algebra 2e. Imported at revision 77a933c.