document.write( "Question 694276: My son can clean the attic in 4 hours and I can do it in 2 hours. How long would it take if we worked together. \n" ); document.write( "

Algebra.Com's Answer #427810 by nerdybill(7384) $\"\"$ $\"About$

You can put this solution on YOUR website!
My son can clean the attic in 4 hours and I can do it in 2 hours. How long would it take if we worked together.
\n" ); document.write( ".
\n" ); document.write( "Let x = time (hours) for both
\n" ); document.write( "then
\n" ); document.write( "x(1/4 + 1/2) = 1
\n" ); document.write( "x(1/4 + 2/4) = 1
\n" ); document.write( "x(3/4) = 1
\n" ); document.write( "x(3) = 4
\n" ); document.write( "x = 4/3 hours
\n" ); document.write( "or
\n" ); document.write( "x = 1 hour and 20 minutes \n" ); document.write( "

\n" );