Algebra 2 (1st Edition)

Published by McDougal Littell
ISBN 10: 0618595414
ISBN 13: 978-0-61859-541-9

Chapter 1, Equations and Inequalities - 1.5 Use Problem Solving Strategies and Models - 1.5 Exercises - Skill Practice - Page 38: 21

Answer

B.

Work Step by Step

Let $h$ be the number of gallons used on the highway. Then the number of gallons used in the city is $15-h$. Then our equation is: $25h+(15-h)20=350$ Thus the answer is B.
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