document.write( "Question 471489: It takes Dan 3 hours to mow his lawn. His wife, Kim, takes 4 hours to mow the lawn. How long will it take them working together to mow the lawn? \n" ); document.write( "
Algebra.Com's Answer #323371 by Alan3354(69443)\"\" \"About 
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Dan does 1/3 per hour.
\n" ); document.write( "Kim does 1/4 per hour.
\n" ); document.write( "Together, they do 1/3 + 1/4 per hour.
\n" ); document.write( "Can you finish it?
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