document.write( "Question 973876: If george washed a car in 20 minutes and sally washed the same car in 15 minutes how long would it take them to wash the car together? \n" ); document.write( "
Algebra.Com's Answer #595907 by josmiceli(19441)![]() ![]() You can put this solution on YOUR website! Add their rates of washing to get \n" ); document.write( "their rate washing together \n" ); document.write( "George's rate: \n" ); document.write( "[ 1 car ] / [ 20 min ] \n" ); document.write( "Sally's rate: \n" ); document.write( "[ 1 car ] / [ 15 min ] \n" ); document.write( "------------------ \n" ); document.write( "Let \n" ); document.write( " \n" ); document.write( "Multiply both sides by \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "It takes them 12 min working together\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |