document.write( "Question 1003679: A group of tourists were supposed to cover an 18 km distance in a certain amount of time. However they actually traveled at a speed which was .5 km/hour greater than what they had actually planned and thus arrived a half an hour early. What speed had the tourists planned to go at? \n" ); document.write( "
Algebra.Com's Answer #620341 by josgarithmetic(39618)\"\" \"About 
You can put this solution on YOUR website!
\r\n" );
document.write( "             rate     time      distance\r\n" );
document.write( "EXPECTED      r         t         d\r\n" );
document.write( "ACTUAL       r+0.5     t-1/2      d\r\n" );
document.write( "
\r
\n" ); document.write( "\n" ); document.write( "\"system%28rt=d%2C%28r%2B1%2F2%29%28t-1%2F2%29=d%29\"\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "STEPS, NOT DONE TO COMPLETION
\n" ); document.write( "\"rt%2Bt%2F2-r%2F2-1%2F4=d\"
\n" ); document.write( "\"d%2Bt%2F2-r%2F2-1%2F4=d\"
\n" ); document.write( "\"t%2F2-r%2F2-1%2F4=0\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Note in the description, d=18, so some use of rt=d or rt=18 will allow you to eliminate either t or r to solve for either r or t. \n" ); document.write( "
\n" );