Basic College Mathematics (10th Edition)

Published by Pearson
ISBN 10: 0134467795
ISBN 13: 978-0-13446-779-5

Chapter 3 - Adding and Subtracting Fractions - 3.3 Adding and Subtracting Unlike Fractions - 3.3 Exercises - Page 221: 39


The fraction of the total area used for reserved seating is $\frac{17}{40}$.

Work Step by Step

Since the total area devoted to seating of fans and guests is $\frac{4}{5}$ and $\frac{3}{8}$ is used for general admission seating, we simply need to subtract both fractions to find out the ratio for reserved seating. $\frac{4}{5} - \frac{3}{8} = \frac{ 4 \cdot 8}{5 \cdot 8} - \frac{3 \cdot 5}{8 \cdot 5} = \frac{32}{40}-\frac{15}{40} = \frac{32 – 15}{40} = \frac{17}{40}$.
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