document.write( "Question 753358: Write an expression for the sum of the work rates:
\n" ); document.write( "Cary and a friend apply one coat of paint in a room in 2.5 hours. Cary's friend paints twice as fast as Cary when they paint separately.
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Algebra.Com's Answer #458353 by stanbon(75887)\"\" \"About 
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Cary and a friend apply one coat of paint in a room in 2.5 hours. Cary's friend paints twice as fast as Cary when they paint separately.
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\n" ); document.write( "Together: time = 2.5 hrs/job ; rate = 1/2.5 = 2/5 job/hr
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\n" ); document.write( "Cary's friend: time = x hr/job ; rate = 1/x job/hr
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\n" ); document.write( "Cary: time = 2x hr/job ; rate = 1/2x job/hr
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\n" ); document.write( "Equation:
\n" ); document.write( "rate + rate = together rate:
\n" ); document.write( "1/x + 1/(2x) = 2/5
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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