document.write( "Question 905464: John can completely wash and dry the dishes in 20 mins. His brother can do it in 30. How long will it take them to do it together? \n" ); document.write( "
Algebra.Com's Answer #549237 by ewatrrr(24785)\"\" \"About 
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x time together
\n" ); document.write( "\"1%2F20+%2B+1%2F30+=+1%2Fx\"
\n" ); document.write( " 3x + 2x = 60
\n" ); document.write( "5x = 60
\n" ); document.write( "x = 12min, time together
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