Elementary Technical Mathematics

Published by Brooks Cole
ISBN 10: 1285199197
ISBN 13: 978-1-28519-919-1

Chapter 7 - Section 7.2 - Proportion - Exercises - Page 277: 50



Work Step by Step

Create a proportion using ratios of cost:linear foot. $\frac{\$7.50}{5\ ft}=\frac{\$x}{16.5\ ft}$ Set the product of the means equal to the product of the extremes and solve for the variable. $5\times x=7.50\times 16.5$ $5x=123.75$ $5x\div5=123.75\div5$ $x=24.75$
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