document.write( "Question 455508: The number of hours h that it takes m men to assemble x machines varies directly as the number of machines and inversely as the number of men. If four men can assemble 12 machines in four hours, how many men are needed to assemble 36 machines in eight hours? \n" ); document.write( "
Algebra.Com's Answer #312734 by jorel1380(3719)![]() ![]() You can put this solution on YOUR website! 4 men x 4 hours=16 man/hours \n" ); document.write( "12 machines/16 man hours=3/4 machine per man-hour \n" ); document.write( "36 machines/8 hours=9/2 machine/hour \n" ); document.write( "(9/2 machine/hour)/(3/4 machine/man)=6 men \n" ); document.write( "6 men x 8 hours x 3/4 machine=36 total machines.. \n" ); document.write( " |