Basic College Mathematics (10th Edition)

Published by Pearson
ISBN 10:
ISBN 13:

Chapter 5 - Ratio and Proportion - 5.5 Solving Application Problems with Proportions - 5.5 Exercises - Page 363: 6

Answer

12 lessons cost $288.

Work Step by Step

$\frac{528}{22\ lessons} = \frac{x}{12}$ $22x = 528\times12$ $22x = 6336$ $\frac{22x}{22} = \frac{6336}{22}$ $x = 288$
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