document.write( "Question 309656: It takes Mary 4 hours to clean the house. John can clean the house in 6 hours. Working together, how long does it take to clean the house? What formula do you use to solve this problem? \n" ); document.write( "
Algebra.Com's Answer #221461 by checkley77(12844)![]() ![]() ![]() You can put this solution on YOUR website! 1/4+1/6=1/x \n" ); document.write( "(6+4)/4*6=1/x \n" ); document.write( "10/24=1/x \n" ); document.write( "10x=24 \n" ); document.write( "x=24/10 \n" ); document.write( "x=2.4 hours working together they can clean the house. \n" ); document.write( " |