document.write( "Question 1029987: Word Problem: it takes vince 9 minutes to mow the lawn if he works alone. If phil helps they can get the lawn mowed in 5 minutes. How long would it take phil to mow the lawn working alone? \n" ); document.write( "
Algebra.Com's Answer #644925 by FrankM(1040)![]() ![]() You can put this solution on YOUR website! Here is my approach - others may have a different method. When I think of rate, it's \"miles per hour\" or \"units per time\" \r \n" ); document.write( "\n" ); document.write( "Vince can mow 6-2/3 lawns per hour. (60/9 = 6.667)\r \n" ); document.write( "\n" ); document.write( "Vince + Phil mow 12 lawns per hour. (60/5 = 2)\r \n" ); document.write( "\n" ); document.write( "So it's simple subtraction, Phil can mow 5-1/3 lawns in 1 hour. And 60/5.33= 11.25 or 11-1/4 minutes to mow one. \n" ); document.write( " |