document.write( "Question 42426: My algebra is very, very rusty and I would like help with the problem below:\r
\n" ); document.write( "\n" ); document.write( "I have a 50% solution that I would like to mix with a 0.20 ml solution and achieve a final concentration of 6%. Please help me calculate the volume of the 50% solution that I will need to add to the 0.20ml to achieve a final concentration of 6% using an algebraic equation. \n" ); document.write( "
Algebra.Com's Answer #27588 by stanbon(75887)\"\" \"About 
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My algebra is very, very rusty and I would like help with the problem below:
\n" ); document.write( "I have a 50% solution that I would like to mix with a 0.20 ml solution and achieve a final concentration of 6%. Please help me calculate the volume of the 50% solution that I will need to add to the 0.20ml to achieve a final concentration of 6% using an algebraic equation\r
\n" ); document.write( "\n" ); document.write( "Let amount of 50% solution be \"x\".
\n" ); document.write( "Active ingrediant in that solution is 0.5x ml
\n" ); document.write( "Equation:
\n" ); document.write( "active ingre. + active ingre. = active ingre.
\n" ); document.write( "0.5x + .20 = 0.6(x+0.2)
\n" ); document.write( "0.5x + 0.2 = 0.6x+0.12
\n" ); document.write( "0.1x = 0.2-0.12
\n" ); document.write( "0.1x = 0.08
\n" ); document.write( "x=0.8 ml
\n" ); document.write( "Amount of 50% solution you need is 0.8 ml
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H> \n" ); document.write( "
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