Answer
$x=130,y=30$
Work Step by Step
As per the statement: $x+y=800/5$ and $x-y=800/8$
After adding the given two equations, we get
$2x=160+100 \implies 2x=260$
or, $x=130$
Now, $130+y=800/5 \implies y=30$
Thus, $x=130,y=30$
Intermediate Algebra for College Students (7th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13417-894-7
ISBN 13:
978-0-13417-894-3
Chapter 3 - Section 3.2 - Problem Solving and Business Applications Using Systems of Equations - Exercise Set - Page 206: 27
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