document.write( "Question 917391: 8 men and 16 women can do a work in 8 days.40 men and 48 women can do the same work in 2 days.how many days are required for 6 men and 12 women to do the same work. \n" ); document.write( "
Algebra.Com's Answer #556641 by josgarithmetic(39617)\"\" \"About 
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Let m = how many days 1 man could do the work if alone;
\n" ); document.write( "let w = how many ways 1 woman could do the same work alone.\r
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\n" ); document.write( "\n" ); document.write( "\"cross%28%288%281%2Fm%29%2B16%281%2Fw%29%2940=1%29\" and \"cross%28%2840%281%2Fm%29%2B48%281%2Fw%29%292=1%29\"\r
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\n" ); document.write( "\n" ); document.write( "Two equations, two unknown variables; simplify each equation and solve the system.\r
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\n" ); document.write( "\n" ); document.write( "The first arrangement of workers
\n" ); document.write( "\"%288%2Fm%2B16%2Fw%298=1\" to account for 1 job
\n" ); document.write( "\"64%2Fm%2B128%2Fw=1\", and LCD is mw
\n" ); document.write( "\"64w%2B128m=mw\"\r
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\n" ); document.write( "\n" ); document.write( "Second arrangement of workers
\n" ); document.write( "\"%2840%2Fm%2B48%2Fw%292=1\"
\n" ); document.write( "\"80%2Fm%2B96%2Fw=1\"
\n" ); document.write( "\"80w%2B96m=mw\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Two equal formulas for mw.
\n" ); document.write( "\"64w%2B128m=80w%2B96m\"
\n" ); document.write( "\"32m=16w\"
\n" ); document.write( "\"2m=w\"
\n" ); document.write( "This is the relationship between m and w, which through substitution,
\n" ); document.write( "allows to find through either of the mw equations, to solve for w and m,
\n" ); document.write( "the NUMBER OF DAYS for one woman to do one job and the NUMBER OF DAYS for one man to do one job.\r
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\n" ); document.write( "\n" ); document.write( "Use this system:
\n" ); document.write( "\"highlight_green%28system%2864w%2B128m=mw%2C90w%2B96m=mw%2Cw=2m%29%29\"\r
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\n" ); document.write( "\n" ); document.write( "(Further steps, not yet done, but you need to do them.)\r
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\n" ); document.write( "\n" ); document.write( "You can then answer the actual question from there, using RT=J for
\n" ); document.write( "rate time job, uniform work rates formula. \r
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\n" ); document.write( "\n" ); document.write( "Substituting \"w=2m\" in the \"64w%2B128m=mw\", solving for m gives
\n" ); document.write( "\"highlight%28m=128%29\" days and this means \"highlight%28w=256%29\" days.\r
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\n" ); document.write( "\n" ); document.write( "Now, use those to solve the question asked.\r
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\n" ); document.write( "\n" ); document.write( "Rate in jobs per day for the 6 men and 12 women,
\n" ); document.write( "\"%286%2F128%2B12%2F256%29\"\r
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\n" ); document.write( "\n" ); document.write( "Let t be the number of days for this group to do 1 job.
\n" ); document.write( "The uniform rates rule gives:
\n" ); document.write( "\"highlight%28%286%2F128%2B12%2F256%29t=1%29\"
\n" ); document.write( "Solve for t.
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\n" ); document.write( "RESULT: \"highlight%28t=10%262%2F3%29\" days.
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