document.write( "Question 569654: Please help, I have set this equation up several times and it is wrong! An athlete ran 6 mph and later cycled 20 mph to complete a 90 mile course. How far did she run and cycle \n" ); document.write( "
Algebra.Com's Answer #367417 by Alan3354(69443)\"\" \"About 
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Please help, I have set this equation up several times and it is wrong! An athlete ran 6 mph and later cycled 20 mph to complete a 90 mile course in 6.25 hours. How far did she run and cycle
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\n" ); document.write( "d = r*t
\n" ); document.write( "t = d/r
\n" ); document.write( "d/6 + (90-d)/20 = 6.25
\n" ); document.write( "10d + 3(90-d) = 375
\n" ); document.write( "7d + 270 = 375
\n" ); document.write( "d = 15 miles running
\n" ); document.write( "75 miles cycling
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