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
Elementary Algebra
by Kaufmann, Jerome; Schwitters, Karen;
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 - Page 114: 31
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