document.write( "Question 1156281: Bruce wants to make 50 ml of an alcohol solution with a 12% concentration. He has a 10% alcohol solution and a 15% alcohol solution. The equation 0.10x + 0.15(50 - x) = 0.12(50) can be used to find the amount of 10% alcohol solution Bruce should use.\r
\n" ); document.write( "\n" ); document.write( "How much of the 10% alcohol solution should Bruce use?\r
\n" ); document.write( "\n" ); document.write( " mL\r
\n" ); document.write( "\n" ); document.write( "How much of the 15% alcohol solution should Bruce use?\r
\n" ); document.write( "\n" ); document.write( " mL
\n" ); document.write( "

Algebra.Com's Answer #779011 by MathTherapy(10552)\"\" \"About 
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\n" ); document.write( "Bruce wants to make 50 ml of an alcohol solution with a 12% concentration. He has a 10% alcohol solution and a 15% alcohol solution. The equation 0.10x + 0.15(50 - x) = 0.12(50) can be used to find the amount of 10% alcohol solution Bruce should use.\r
\n" ); document.write( "\n" ); document.write( "How much of the 10% alcohol solution should Bruce use?\r
\n" ); document.write( "\n" ); document.write( "How much of the 15% alcohol solution should Bruce use?
\n" ); document.write( "
0.10x + 0.15(50  -  x) = 0.12(50)
\n" ); document.write( "The given equation indicates that the 10% solution was named x
\n" ); document.write( "This means that the 15% solution is 50 - x, as named
\n" ); document.write( ".1x + .15(50 - x) = .12(50)
\n" ); document.write( ".1x + 7.5 - .15x = 6
\n" ); document.write( ".1x - .15x = 6 - 7.5
\n" ); document.write( "- .05x = - 1.5
\n" ); document.write( "x, or amount of 10% solution to mix = \"highlight_green%28matrix%281%2C4%2C+%28-+1.5%29%2F%28-+.05%29%2C+%22=%22%2C+30%2C+mL%29%29\"
\n" ); document.write( "Now, can you find the amount of 15% solution to mix? \n" ); document.write( "
\n" );