document.write( "Question 274937: Mary can paint a house in 4 hrs.John can paint the same house in 6 hrs. How long will it take to paint house together. First I converted hours to minutes, added them together, then divided by two. please help me set up this problem correctly. \n" ); document.write( "

Algebra.Com's Answer #200615 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

You can put this solution on YOUR website!
Mary can paint a house in 4 hrs.John can paint the same house in 6 hrs.
\n" ); document.write( " How long will it take to paint house together
\n" ); document.write( ":
\n" ); document.write( "You have to use the \"shared work equation\"
\n" ); document.write( "where
\n" ); document.write( "t = time (in hrs) required when working together
\n" ); document.write( "and
\n" ); document.write( "completed job = 1 (a painted house)
\n" ); document.write( ":
\n" ); document.write( "Each will do a fraction of the job, the two fractions add up to 1
\n" ); document.write( " $\"t%2F4\"$ + $\"t%2F6\"$ = 1
\n" ); document.write( ":
\n" ); document.write( "That's the setup. Email me if you have difficulty with it: ankor@att.net \n" ); document.write( "

\n" );