document.write( "Question 141266: Working together, Pat, Lindsay and Robin can dig a drainage ditch in 2 3/4 hours. Working alone, Robin can do it in 9 hours, while Pat can do it 1/2 hour faster than Lindsay. How long will it take Lindsay to dig the ditch by herself? \n" ); document.write( "
Algebra.Com's Answer #102981 by scott8148(6628)\"\" \"About 
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let x=Lindsay\r
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\n" ); document.write( "\n" ); document.write( "(1/9)+[1/(x-1/2)]+(1/x)=1/(11/4)\r
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\n" ); document.write( "\n" ); document.write( "multiplying by x(x-1/2) __ x(x-1/2)+x+x-1/2=(4/11)x(x-1/2) __ x^2+(3/2)x-1/2=(4/11)(x^2-(1/2)x)\r
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\n" ); document.write( "\n" ); document.write( "multiplying by 22 __ 22x^2+33x-11=8x^2-4x __ 14x^2+37x-11=0\r
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\n" ); document.write( "\n" ); document.write( "use quadratic formula to find x
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