Elementary Algebra

Published by Cengage Learning
ISBN 10: 1285194055
ISBN 13: 978-1-28519-405-9

Chapter 3 - Equations and Problem Solving - 3.3 - More on Solving Equations and Problem Solving - Problem Set 3.3: 31

Answer

The number is 17.

Work Step by Step

Let n represent the first number. Four times the number means 4n. The sum of a number plus four times the number is 85. So: n + 4n = 85 5n = 85 Divide both sides by 5 n = 17
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