document.write( "Question 1139188: Evan went on a bike ride of 120 miles. He realized that if he had gone 18 mph faster, he would have arrived 15 hours sooner. How fast did he actually ride?
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Algebra.Com's Answer #756960 by josgarithmetic(39630) $\"\"$ $\"About$

You can put this solution on YOUR website!

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document.write( "              SPEED        TIME(hours)          DISTANCE\r\n" );
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document.write( "ACTUAL           r                        120\r\n" );
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document.write( "IF              r+18                 120\r\n" );
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\n" ); document.write( "\n" ); document.write( " $\"120%2Fr-120%2F%28r%2B18%29=15\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"8%2Fr-8%2F%28r%2B18%29=1\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"8%28r%2B18%29-8r=r%28r%2B18%29\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"8r%2B8%2A18-8r=r%5E2%2B18r\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"8%2A18=r%5E2%2B18r\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"r%28r%2B18%29=144\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"system%28r=6%2Cand%2Cr%2B18=24%29\"$ \r
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\n" ); document.write( "\n" ); document.write( " $\"highlight%28r=6%29\"$ \r
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