document.write( "Question 277932: It takes Amy twice as long to clean the office as it does Nancy. How long would it take each girl to clean the office by herself if they can clean the office together in 40 minutes? \n" ); document.write( "
Algebra.Com's Answer #202314 by richwmiller(17219)\"\" \"About 
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It takes Amy twice as long to clean the office as it does Nancy. How long would it take each girl to clean the office by herself if they can clean the office together in 40 minutes?
\n" ); document.write( "a=2n
\n" ); document.write( "40/n+40/2n=1
\n" ); document.write( "80+40=2n
\n" ); document.write( "120=2n
\n" ); document.write( "n=60 min
\n" ); document.write( "a=120 min.\r
\n" ); document.write( "\n" ); document.write( "check
\n" ); document.write( "40/60+40/120=1
\n" ); document.write( "2/3+1/3=1\r
\n" ); document.write( "\n" ); document.write( "x/60+x/120=1
\n" ); document.write( "2x+x=120
\n" ); document.write( "3x=120
\n" ); document.write( "x=40
\n" ); document.write( "ok\r
\n" ); document.write( "\n" ); document.write( "ok\r
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