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Back to 7.5 Solve Applications with Rational Equations

7.5 Exercise 87

Avg difficulty 2.5

Solve the application problem provided.

Dana enjoys taking her dog for a walk, but sometimes her dog gets away, and she has to run after him. Dana walked her dog for 7 miles but then had to run for 1 mile, spending a total time of 2.5 hours with her dog. Her running speed was 3 mph faster than her walking speed. Find her walking speed.

OpenStax Intermediate Algebra 2e, 7.5 Solve Applications with Rational Equations, exercise 87

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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.