Basic College Mathematics (9th Edition)

Published by Pearson
ISBN 10: 0321825535
ISBN 13: 978-0-32182-553-7

Chapter 5 - Ratio and Proportion - 5.4 Solving Problems - 5.4 Exercises - Page 357: 27

Answer

$x = 0.005$ $x = \frac{5}{1000}$

Work Step by Step

$\frac{x}{0.06} = \frac{0.15}{1.8}$ $1.8x = (0.15)(0.06)$ $1.8x = 0.009$ $\frac{1.8x}{1.8} = \frac{0.009}{1.8}$ $x = 0.005$ $\frac{x}{\frac{3}{50}} = \frac{\frac{15}{100}}{1\frac{4}{5}}$ $1\frac{4}{5}x = (\frac{3}{50})(\frac{15}{100})$ $\frac{9}{5}x = \frac{45}{5000}$ $\frac{9}{5}x(\frac{5}{9}) = (\frac{45}{5000})(\frac{5}{9})$ $\frac{9}{5}x(\frac{5}{9}) = (\frac{45\div9}{5000\div5})(\frac{5\div5}{9\div9})$ $x = \frac{5}{1000}$
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