Intermediate Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-894-7
ISBN 13: 978-0-13417-894-3

Chapter 5 - Cumulative Review Exercises - Page 402: 10

Answer

Winner $=1480$ votes. Loser $=1320$ votes.

Work Step by Step

Let the votes cast for winner be $x$. and the votes cast for loser be $y$. Total votes $x+y=2800$......(1) And because the number of votes for the winner were $160$ more than those for the loser, we have $x=y+160$......(2) Substitute the value of $x$ from equation (2) to equation (1). $y+160+y=2800$ Add like terms and subtract $160$ from both sides. $2y+160-160=2800-160$ $2y=2640$ Divide both sides by $2$. $\frac{2y}{2}=\frac{2640}{2}$ Simplify. $y=1320$ Plug the value of $y$ into equation (2). $x=1320+160$ Simplify. $x=1480$.
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