document.write( "Question 896214: A printer has ink that is 7% cobalt blue color and ink that is 23% cobalt blue color. How many ounces of each ink are needed to make 1 gallon (128 ounces) of ink that is 15% cobalt blue color?
\n" ); document.write( "
\n" ); document.write( "

Algebra.Com's Answer #543329 by josgarithmetic(39617)\"\" \"About 
You can put this solution on YOUR website!
L=7
\n" ); document.write( "H=23
\n" ); document.write( "T=15
\n" ); document.write( "M=128 but you must understand this is NOT OUNCES. Why? It is something else.
\n" ); document.write( "u = unknown amount of 7%
\n" ); document.write( "v = unknown amount of 23%\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "A unit conversion may be needed; but if you are justified in ignoring it,\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"%28Lu%2BHv%29%2FM=T\" and \"u%2Bv=128\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "A lesson for this in general is here: Mixing two concentrations for known amount of mixture - http://www.algebra.com/my/Mixtures%3A-All-in-Symbols.lesson?content_action=show_dev
\n" ); document.write( "
\n" );