Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter 2 - Section 2.7 - Polynomial and Rational Inequalities - Exercise Set - Page 415: 115


The required value is $k=8$

Work Step by Step

The provided equation is, $S=\frac{kA}{P}$ Put the values of A, P and S in the formulae. $\begin{align} & 12000=\frac{k\times 60000}{40} \\ & k=\frac{12000\times 40}{60000} \\ & k=8 \end{align}$ Therefore, the value of $k=8$.
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