Answer
$6$
Work Step by Step
Let $x$ be the number of copy machines for 23 secretaries.
$\frac{4}{15} = \frac{x}{23}$
$x=\frac{4}{15}\times23$
$x=\frac{92}{15}$
$x\approx6$
Elementary Geometry for College Students (7th Edition)
by Alexander, Daniel C.; Koeberlein, Geralyn M.
Published by
Cengage
ISBN 10:
978-1-337-61408-5
ISBN 13:
978-1-33761-408-5
Chapter 5 - Section 5.1 - Ratios, Rates, and Proportions - Exercises - Page 228: 20
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