Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 9 - Section 9.1 - Solving Systems of Linear Equations in Three Variables and Problem Solving - Exercise Set: 32

Answer

The number of women participating in Running is 17.2 million and the number of women participating in Swimming is 33.3 million

Work Step by Step

S = # of women participating in swimming R = # of women participating in Running Given Equations: 2R - S = 1.1 million S + R = 50.5 million Solve for T in second equation S = 50.5 million - R Substitute in new value of S 2R - (50.5 million - R) = 1.1 million 3R = 51.6 million R = 17.2 million Now solve for S S + 17.2 million = 50.5 million S = 33.3 million
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