Intermediate Algebra for College Students (7th Edition)

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 205: 11

Answer

$x=22,y=14$

Work Step by Step

Given: $x+y=36$ and $1180x+125y=27710$ After plugging first equation in second equation, we have $1180(36-y)+125y=27710 \implies -1055y=-14770$ or, $y=14$ Now, $x+14=36$ or, $x=36-14=22$ Thus, $x=22,y=14$
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