document.write( "Question 994108: Rico can drive 2 times as fast as Luis can ride his bicycle. If it takes Luis 2 hours longer than Rico to travel 88 miles, how fast can Luis ride his bicycle? \n" ); document.write( "

Algebra.Com's Answer #613320 by josgarithmetic(39617) $\"\"$ $\"About$

You can put this solution on YOUR website!
RT=D uniform rate equation to relate speed (rate), time, and distance.\r
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document.write( "           speed      time     distance\r\n" );
document.write( "Rico       nr          t        d\r\n" );
document.write( "Luis        r          t+k      d\r\n" );
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document.write( "Symbolic System To Solve for variables r and t:\r\n" );
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\n" ); document.write( "\n" ); document.write( "More than one way to solve this, but most pleasant may be,...
\n" ); document.write( " $\"t=d%2F%28nr%29\"$
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\n" ); document.write( " $\"rt%2Bkr=d\"$
\n" ); document.write( " $\"r%28d%2F%28nr%29%29%2Bkr=d\"$
\n" ); document.write( " $\"d%2Fn%2Bkr=d\"$
\n" ); document.write( " $\"kr=d-d%2Fn\"$
\n" ); document.write( " $\"r=d%2Fk-d%2F%28kn%29\"$
\n" ); document.write( " $\"r=dn%2F%28kn%29-d%2F%28kn%29\"$
\n" ); document.write( " $\"highlight%28r=%28dn-d%29%2F%28kn%29%29\"$ --------this may be the most comfortable formula for r to use, but which form you use for evaluation is your choice.
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\n" ); document.write( "Maybe use as $\"highlight%28r=d%28n-1%29%2F%28kn%29%29\"$ \r
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\n" ); document.write( "\n" ); document.write( "SUBSTITUTION
\n" ); document.write( " $\"r=88%282-1%29%2F%282%2A2%29\"$
\n" ); document.write( "r=22 \n" ); document.write( "

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