document.write( "Question 227574: Hi I need the formula for work problems. Joey can paint a room in 5 hours and sheila can paint it in 4 hours. How long will it take if they work together?
\n" ); document.write( "
\n" ); document.write( "

Algebra.Com's Answer #169116 by user_dude2008(1862)\"\" \"About 
You can put this solution on YOUR website!
t(1/5+1/4)=1
\n" ); document.write( "t/5+t/4=1
\n" ); document.write( "4t+5t=20
\n" ); document.write( "9t=20
\n" ); document.write( "t=20/9
\n" ); document.write( "t=2.222\r
\n" ); document.write( "\n" ); document.write( "Answer: 2.222 hours
\n" ); document.write( "
\n" );