document.write( "Question 1022431: Luis can drive 3 times as fast as Rico can ride his bicycle. If it takes Rico 4 hours longer than Luis to travel 72 miles, how fast can Rico ride his bicycle? \n" ); document.write( "
Algebra.Com's Answer #638110 by josgarithmetic(39630)\"\" \"About 
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document.write( "            rate      time       distance\r\n" );
document.write( "LUIS        3r          t         72\r\n" );
document.write( "RICO         r         t+4        72
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\n" ); document.write( "\n" ); document.write( "R rate, T time, D distance;
\n" ); document.write( "Basic Travel Rate Rule is RT=D.\r
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\n" ); document.write( "\n" ); document.write( "\"system%283r%2At=72%2Cr%28t%2B4%29=72%29\"
\n" ); document.write( "Solve the system.
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