document.write( "Question 94144: An experienced accountant can balance the books twice as fast as a new accountant. Working together it takes the accountants 6 hours. How long would it take the experienced accountant working alone? \n" ); document.write( "
Algebra.Com's Answer #68553 by checkley75(3666)\"\" \"About 
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x*2x/x+2x=6
\n" ); document.write( "2x^2/3x=6
\n" ); document.write( "2x^2=18x
\n" ); document.write( "2x^2-18x=0
\n" ); document.write( "2x(x-9)=0
\n" ); document.write( "x-9=0
\n" ); document.write( "x=9 hours for the fast accountant.
\n" ); document.write( "2*9=18 hours for the slow accountant.
\n" ); document.write( "proof
\n" ); document.write( "2*9^2/3*9=6
\n" ); document.write( "2*81/27=6
\n" ); document.write( "162/27=6
\n" ); document.write( "6=6
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