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.
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
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
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