document.write( "Question 949656: Working for 8 hrs daily, 40 men can complete in 21 days. Working for 10 hrs daily, If the work has to be finished in 14 days, how many men are needed to do the same work? \n" ); document.write( "
Algebra.Com's Answer #579785 by ptaylor(2198)\"\" \"About 
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Working for 8 hrs daily, 40 men can complete in 21 days. Working for 10 hrs daily, If the work has to be finished in 14 days, how many men are needed to do the same work?
\n" ); document.write( "Let x=amount of men needed to do the same work
\n" ); document.write( "At 8 hr/da, 40 men can complete the job in 8*21=168 hrs
\n" ); document.write( "So 40 men work at the rate of 1/168 of the job/hr
\n" ); document.write( "1 man works at the rate of 1/(40*168)=1/6720 of the job per hour
\n" ); document.write( "At 10 hr/da, work must be finished in 14*10= 140 hr\r
\n" ); document.write( "\n" ); document.write( "x men works at the rate of 1/140 job/hr
\n" ); document.write( "So our equation to solve is:
\n" ); document.write( "x/6720=1/140
\n" ); document.write( "6720=140x
\n" ); document.write( "x=48 men---needed to do the same work working at 10 hr/da for 14 days.
\n" ); document.write( "CK
\n" ); document.write( "48/6720 = 1/140
\n" ); document.write( "1/140=1/140
\n" ); document.write( "Another way
\n" ); document.write( "It takes 40*168=6720 man-hours to complete the work
\n" ); document.write( "Working 14 days at 10 hrs/da, x men takes 140 hrs to complete the work
\n" ); document.write( "140x=6720
\n" ); document.write( "x=48\r
\n" ); document.write( "\n" ); document.write( "Hope this helps---ptaylor\r
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