document.write( "Question 768663: She needs to prepare 36oz of a 12% solution. Find the amount of 18% solution and the amount of 9% solution she should mix to get this solution. \n" ); document.write( "
Algebra.Com's Answer #468476 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! She needs to prepare 36oz of a 12% solution. \n" ); document.write( " Find the amount of 18% solution and the amount of 9% solution she should mix to get this solution. \n" ); document.write( ": \n" ); document.write( "Let x = amt of 18% solution \n" ); document.write( "the result is to be 36oz, therefore \n" ); document.write( "(36-x) = amt of 9% solution \n" ); document.write( ": \n" ); document.write( "A mixture equation in decimal form \n" ); document.write( ".18x + .09(36-x) = .12(36) \n" ); document.write( ".18x + 3.24 - .09x = 4.32 \n" ); document.write( ".18x - .09x = 4.32 - 3.24 \n" ); document.write( ".09x = 1.08 \n" ); document.write( "x = 1.08/.09 \n" ); document.write( "x = 12 oz of 18%, then obviously it's 24 oz of 9% \n" ); document.write( "; \n" ); document.write( ": \n" ); document.write( "you can check this on your calc \n" ); document.write( ".18(12) + .09(24) = .12(36) \n" ); document.write( " |