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Back to 8.9 Use Direct and Inverse Variation

8.9 Exercise 159

Avg difficulty 2.5

Solve.

When making the 5-hour drive home from visiting her parents, Lisa ran into bad weather. She was able to drive 176 miles while the weather was good, but then driving 10 mph slower, went 81 miles in the bad weather. How fast did she drive when the weather was bad?

OpenStax Elementary Algebra 2e, 8.9 Use Direct and Inverse Variation, exercise 159

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