Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 2 - Solving Equations - 2-7 Solving Proportions - Practice and Problem-Solving Exercises - Page 128: 40


x = 40 min

Work Step by Step

Step 1) (15/45) = (x/120) Step 2) 1800 = 45x Step 3) 1800/45 = x Step 4) x = 40 To find how long it will take to download a 120-minute movie on this computer at a rate of 14 minutes download time per 45 minutes of a show, set up a proportion. Let x equal the number of minutes. Cross-multiply to solve.
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