In three separate 1-mile races, Ellen finished with times of x minutes, y minutes, and z minutes,
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In three separate 1-mile races, Ellen finished with times of x minutes, y minutes, and z minutes, respectively. What was her average speed, in miles per hour, for all three races?
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A) B) C) D) x+y+z 3 3 x+y+z x+y+z 180 180 x+y+z
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Related Book For
McGraw-Hill Education SAT 2017
ISBN: 9781259641657
1st Edition
Authors: Christopher Black, Mark Anestis
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