Answer
$x=650,y=50$
Work Step by Step
As per the statement: $x+y=4200/6$ and $x-y=4200/7$
After adding the given two equations, we get
$2x=700+600 \implies 2x=1300$
or, $x=650$
Now, $650+y=4200/6 \implies y=50$
Thus, $x=650,y=50$
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: 28
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