document.write( "Question 838642: 4 men or 6 boys can dig a well in 14 days . how long would 2 men and 4 boys take to dig the same well? \n" ); document.write( "
Algebra.Com's Answer #505226 by ankor@dixie-net.com(22740)\"\" \"About 
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4 men or 6 boys can dig a well in 14 days.
\n" ); document.write( "Find the number of man-days and boy-days required to complete the job
\n" ); document.write( "4 * 14 = 56 man-days
\n" ); document.write( "6 * 14 = 84 boy-days
\n" ); document.write( ":
\n" ); document.write( "Since they both worked 14 days to complete the job, we can say:
\n" ); document.write( "4m = 6b
\n" ); document.write( "2m = 3b
\n" ); document.write( "m = 1.5b
\n" ); document.write( ":
\n" ); document.write( " how long would 2 men and 4 boys take to dig the same well?
\n" ); document.write( "Use boy-days, replace men with 1.5
\n" ); document.write( "let d = no. of days required with this scenario
\n" ); document.write( "2(1.5)d + 4d = 84
\n" ); document.write( "3d + 4d = 84
\n" ); document.write( "7d = 84
\n" ); document.write( "d = 84/7
\n" ); document.write( "d = 12 days for 2 men and 4 boys to do the job\r
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