document.write( "Question 255308: Pedro can paint a fence 50% faster than Juan and 20% faster than Pilar. Together they can paint a given fence in 4 hr. How long would it take Pedro paint the same fence if he had work alone? \n" ); document.write( "
Algebra.Com's Answer #187655 by ankor@dixie-net.com(22740)\"\" \"About 
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Pedro can paint a fence 50% faster than Juan and 20% faster than Pilar.
\n" ); document.write( " Together they can paint a given fence in 4 hr.
\n" ); document.write( "How long would it take Pedro paint the same fence if he had work alone?
\n" ); document.write( ":
\n" ); document.write( "let t = time required by Pedro alone
\n" ); document.write( "then
\n" ); document.write( "1.5t = time required by Juan
\n" ); document.write( "and
\n" ); document.write( "1.2 = time required by Pilar
\n" ); document.write( ":
\n" ); document.write( "Let the completed job = 1
\n" ); document.write( ":
\n" ); document.write( "\"4%2Ft\" + \"4%2F%281.5t%29\" + \"4%2F%281.2t%29\" = 1
\n" ); document.write( "Multiply equation by 6t, results
\n" ); document.write( "6(4) + 4(4) + 5(4) = 6t
\n" ); document.write( "24 + 16 + 20 = 6t
\n" ); document.write( "60 = 6t
\n" ); document.write( "t = \"60%2F6\"
\n" ); document.write( "t = 10 hrs for Pedro
\n" ); document.write( "1.5(10) = 15 hrs for Juan
\n" ); document.write( "1.2(10) = 12 hrs for Pilar
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\n" ); document.write( ":
\n" ); document.write( "Check solution on a calc:
\n" ); document.write( "\"4%2F10\" + \"4%2F15\" + \"4%2F12\" = 1\r
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