document.write( "Question 350831: Four men and three women can do a job in 6 days. When five men and six women work on the same job, the work gets completed in 4 days. How long will a woman take to do the job, if she works alone on it? \n" ); document.write( "
Algebra.Com's Answer #250784 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Fact: rate + rate = together rate \n" ); document.write( "----------------------------------------- \n" ); document.write( "Let \"m\" be the men's rate and \"w\" be the woman's rate. \n" ); document.write( "------------------- \n" ); document.write( "Four men and three women can do a job in 6 days. \n" ); document.write( "--- \n" ); document.write( "4m+3w = 1/6 \n" ); document.write( "-------------------------------\r \n" ); document.write( "\n" ); document.write( "When five men and six women work on the same job, the work gets completed in 4 days. \n" ); document.write( "--- \n" ); document.write( "5m+6w= 1/4 \n" ); document.write( "================= \n" ); document.write( "Multiply thru 1st equation by 2 to get: \n" ); document.write( "8m + 6w = 1/3 \n" ); document.write( "---- \n" ); document.write( "Subtract 2nd from latter to get: \n" ); document.write( "3m = (1/3)-(1/4) \n" ); document.write( "3m = 1/12 \n" ); document.write( "m = 1/36 \n" ); document.write( "--- \n" ); document.write( "Solve for \"w\" using 4m+3w = 1/6 \n" ); document.write( "--- \n" ); document.write( "4(1/36) + 3w = 6/36 \n" ); document.write( "3w = 2/36 \n" ); document.write( "w = 1/54 \n" ); document.write( "=================\r \n" ); document.write( "\n" ); document.write( "How long will a woman take to do the job, if she works alone on it? \n" ); document.write( "Answer: 54 days \n" ); document.write( "==================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " \n" ); document.write( " |