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Back to 7.5 Solve Applications with Rational Equations

7.5 Exercise 113

Avg difficulty 2.5

Write an inverse variation equation to solve the following problems.

The time required to empty a tank varies inversely as the rate of pumping. It took Ada 5 hours to pump her flooded basement using a pump that was rated at 200 gpm (gallons per minute).

ⓐ Write the equation that relates the number of hours to the pump rate. ⓑ How long would it take Ada to pump her basement if she used a pump rated at 400 gpm?

OpenStax Intermediate Algebra 2e, 7.5 Solve Applications with Rational Equations, exercise 113

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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.