document.write( "Question 820993: There are 4 men making a house. One guy can make it in 2 days , another guy in 10 days, another in 40 days , another in 20 days. How long will it take them to finish if they work together. \n" ); document.write( "
Algebra.Com's Answer #493853 by moemoe(2)\"\" \"About 
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4
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