## Precalculus (6th Edition) Blitzer

Published by Pearson

# Chapter 2 - Review Exercises - Page 433: 97

#### Answer

$16$ hours

#### Work Step by Step

We are given that $z=k\dfrac{x}{y}$ Thus, $10=k \times \dfrac{30}{6} \implies 5k=10$ so, $k=2$ This implies that $z=2 \times \dfrac{40}{5}$ or, $z=16$ hours

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