Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

Published by Pearson
ISBN 10: 0-32184-874-8
ISBN 13: 978-0-32184-874-1

Chapter 6 - Rational Expressions and Equations - 6.7 Applications Using Rational Equations and Proportions - 6.7 Exercise Set - Page 426: 12


$$ \frac{2}{3}\ \text{Lawns per hour}$$

Work Step by Step

We know that the overall rate is equal to the sum of the individual rates. Letting Mark's rate be $x$, we find: $$ 1=\frac{1}{3}+x \\ x=\frac{2}{3}\ \text{Lawns per hour}$$
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