document.write( "Question 1104644: If two people work at washing 5 cars and one can do all 5 cars on their own in 36 minutes and the other can do all 5 on their own in 42 minutes, how long does it take to wash all 5 working together? \n" ); document.write( "
Algebra.Com's Answer #719468 by josgarithmetic(39620)![]() ![]() ![]() You can put this solution on YOUR website! One job is wash five cars.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "RATE of both people combined is \n" ); document.write( "\n" ); document.write( "Lowest common denominator is \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( "\n" ); document.write( "-\r \n" ); document.write( "\n" ); document.write( "TIME: \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( "or about 20 minutes. \n" ); document.write( " |