document.write( "Question 455501: Bob can paint a house in 4 days. Sam can paint the same house in 5 days. How many will it take to paint the house if they work together? \n" ); document.write( "
Algebra.Com's Answer #312738 by jorel1380(3719)\"\" \"About 
You can put this solution on YOUR website!
1/4+1/5=1/t
\n" ); document.write( "5/20+4/20=1/t
\n" ); document.write( "9/20=1/t
\n" ); document.write( "9t=20
\n" ); document.write( "t=20/9
\n" ); document.write( "It will take them 20/9ths days to paint the house together..
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