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)\"\" \"About 
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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.
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\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
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\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%
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\n" ); document.write( "you can check this on your calc
\n" ); document.write( ".18(12) + .09(24) = .12(36)
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