document.write( "Question 872001: A landscaper wants to use a fertilizer blend that is 8% nitrogen. He will mix a 10% nitrogen fertilizer with a 5% nitrogen fertilizer to get 150 lbs. of the 8% blend. How many pounds of each type should be mixed to get the desired solution? \n" ); document.write( "
Algebra.Com's Answer #525858 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! A landscaper wants to use a fertilizer blend that is 8% nitrogen. \n" ); document.write( " He will mix a 10% nitrogen fertilizer with a 5% nitrogen fertilizer to get 150 lbs. of the 8% blend. \n" ); document.write( " How many pounds of each type should be mixed to get the desired solution? \n" ); document.write( ": \n" ); document.write( "let x = amt of 10% fert \n" ); document.write( "then because the total is to be 150 lb: \n" ); document.write( "(150-x) = amt of 5% fert \n" ); document.write( ": \n" ); document.write( ".10x + .05(150-x) = .08(150) \n" ); document.write( ".10x + 7.5 - .05x = 12 \n" ); document.write( ".10x - .05x = 12 - 7.5 \n" ); document.write( " .05x = 4.5 \n" ); document.write( "x = 4.5/.05 \n" ); document.write( "x = 90 lb of 10% fert \n" ); document.write( "and \n" ); document.write( "150-90 = 60 lb of 5% fert \n" ); document.write( " |