document.write( "Question 1060753: A pharmacist has a 12% solution of boric acid and a 20% solution of boric acid. How much of each must he use to make 80 grams of a 15% boric acid solution \n" ); document.write( "
Algebra.Com's Answer #675628 by ankor@dixie-net.com(22740)\"\" \"About 
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A pharmacist has a 12% solution of boric acid and a 20% solution of boric acid.
\n" ); document.write( " How much of each must he use to make 80 grams of a 15% boric acid solution.
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\n" ); document.write( "let x = amt of 20% solution required
\n" ); document.write( "the resulting amt is to be 80 grams therefore
\n" ); document.write( "(80-x) = amt of 12% solution needed
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\n" ); document.write( "A decimal equiv of per cent equation
\n" ); document.write( ".20x = .12(80-x) = .15(80)
\n" ); document.write( ".20x + 9.6 - .12x = 12
\n" ); document.write( ".20x - .12x = 12 - 9.6
\n" ); document.write( ".08x = 2.4
\n" ); document.write( "x = 2.4/.08
\n" ); document.write( "x = 30 grams of the 20% solution
\n" ); document.write( "and obviously
\n" ); document.write( "80 - 30 = 50 grams of the 12%
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\n" ); document.write( "Check
\n" ); document.write( ".20(30) + .12(50) = .15(80)
\n" ); document.write( "6 + 6 = 12
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