document.write( "Question 191004: If Sally can paint a house in 4 hours, and John can paint the same house in 6 hours, how long will it take both of them to paint the house together? \n" ); document.write( "
Algebra.Com's Answer #143415 by checkley75(3666)\"\" \"About 
You can put this solution on YOUR website!
4*6/(4+6)=24/10=2.4 hours when they work together. \n" ); document.write( "
\n" );