Algebra: A Combined Approach (4th Edition)

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

Chapter 4 - Test - Page 331: 22

Answer

6mph, 3 mph

Work Step by Step

trail is 36 miles long, takes 4 hours $x=2y$ $(x+y)*4=36$ $4x+4y=36$ $4*(2y)+4y=36$ $8y+4y=36$ $12y=36$ $12y/12=36/12$ $y=3$ $x=2y$ $x=2*3$ $x=6$
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