document.write( "Question 949206: it takes 63 minutes for 4 people to paint 7 walls\r
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Algebra.Com's Answer #579549 by Alan3354(69443)\"\" \"About 
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it takes 63 minutes for 4 people to paint 7 walls
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\n" ); document.write( "63*4/7 = 36 people-minute per wall
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\n" ); document.write( "10 walls * 36 = 360 people-minutes
\n" ); document.write( "360/5 = 72 minutes
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