document.write( "Question 796307: Marina can bicycle 19.5 miles in the same time it takes her to run 6 miles. She bikes 9 miles per hour faster than she runs. At what speed does Marina run? \n" ); document.write( "
Algebra.Com's Answer #481328 by Cromlix(4381)\"\" \"About 
You can put this solution on YOUR website!
Running Speed = x
\n" ); document.write( "Cycling Speed = x + 9
\n" ); document.write( "19.5/x + 9 = 6/x
\n" ); document.write( "Cross multiply
\n" ); document.write( "19.5x = 6x + 54
\n" ); document.write( "Collect like terms:
\n" ); document.write( "19.5x - 6x = 54
\n" ); document.write( "13.5x = 54
\n" ); document.write( "x = 4
\n" ); document.write( "Running speed = 4 mph
\n" ); document.write( "Cycling speed = 13 mph
\n" ); document.write( "Hope this helps.
\n" ); document.write( ":-)
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