document.write( "Question 940473: it takes Mark five hours to paint a fence. Abharsa can paint the same fence in nine hours. if they worked together how long would it take them to paint the same fence? \n" ); document.write( "
Algebra.Com's Answer #573183 by macston(5194)\"\" \"About 
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Mark paints \"1%2F5\" fence per hour.
\n" ); document.write( "Abharsa paints \"1%2F9\" fence per hour.
\n" ); document.write( "Together they paint \"1%2F5%2B1%2F9=9%2F45%2B5%2F45=14%2F45\"per hour.
\n" ); document.write( "It would take them \"1%2F%2814%2F45%29\"=3.2 hours to paint the fence.
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