document.write( "Question 887663: 15 men working 6 hours a day can do a piece of work in 20 days. how many men working 8 hours a day can do it in 25 days. \n" ); document.write( "
Algebra.Com's Answer #536781 by sadike007(4)![]() ![]() ![]() You can put this solution on YOUR website! let us do a ratio and proportion technique. it takes 15 men 6 hours per day for 20 days to make one piece.. so it takes 120 hours for 15 men.\r \n" ); document.write( "\n" ); document.write( "it takes x to make one piece in 8 hours for 25 days,\r \n" ); document.write( "\n" ); document.write( "this is what we have now.\r \n" ); document.write( "\n" ); document.write( "15 men → 1 piece/120 hours \n" ); document.write( "x men → 1 piece/ 200 hours.\r \n" ); document.write( "\n" ); document.write( "we now 'cross multiply' and get\r \n" ); document.write( "\n" ); document.write( "x(1/120)=15(1/200) \n" ); document.write( "x=9.. therefore it takes 9 men to work 8 hours per day for 25 days to make one piece \n" ); document.write( " |