document.write( "Question 1012976: If 25 skilled men can complete a job in 8 days; 12 skilled men and 15 unskilled men can complete it in 10 days. If 3 unskilled men can do it, how long would it take them?
\n" );
document.write( " \n" );
document.write( "
Algebra.Com's Answer #629113 by macston(5194)![]() ![]() You can put this solution on YOUR website! . \n" ); document.write( "complete job=25 skilled men x 8 days =200 skilled man-days \n" ); document.write( ". \n" ); document.write( "complete job=(12 skilled men + 15 unskilled men) x 10 days =120 skilled man-day+150 unskilled man-days \n" ); document.write( ". \n" ); document.write( "120 skilled man-day+150 unskilled man-days=200 skilled man-days \n" ); document.write( ". \n" ); document.write( "150 unskilled man-days=80 skilled man-days \n" ); document.write( "150/80 unskilled man-days=1 skilled man-day \n" ); document.write( "1.75 unskilled man-days=1 skilled man-day \n" ); document.write( ". \n" ); document.write( "complete job=(200 skilled man-days)(1.75 unskilled man days/skilled man day) \n" ); document.write( ". \n" ); document.write( "complete job=350 unskilled man-days \n" ); document.write( ". \n" ); document.write( "For 3 unskilled men: \n" ); document.write( "complete job=350 unskilled man-days/3 unskilled men=116.7 days \n" ); document.write( ". \n" ); document.write( "ANSWER: It would take 3 unskilled men 116.7 days to complete the job. \n" ); document.write( " |