document.write( "Question 29973: Julieta ran a marathon of 26 miles in 3.5 hours. During part of the race she ran at 6 miles per hour, and the rest of the time she ran at 8 miles per hour. How long did she run at each speed?\r
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Algebra.Com's Answer #16731 by Paul(988)\"\" \"About 
You can put this solution on YOUR website!
Let the hours of running time at 6mph be x
\n" ); document.write( "Let the hours of running time at 8mph be y\r
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\n" ); document.write( "\n" ); document.write( "x+y=3.5
\n" ); document.write( "y=3.5-x (subsitution)\r
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\n" ); document.write( "\n" ); document.write( "Equation:
\n" ); document.write( "--->subsitute:\r
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\n" ); document.write( "\n" ); document.write( "y=3.5-1
\n" ); document.write( "y=2.5\r
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\n" ); document.write( "\n" ); document.write( "Hence, she ran for 1 hour at 6mph and 2.5 hours at 8mph.
\n" ); document.write( "Paul.
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