document.write( "Question 1092637: a printer has ink that is 5% cobalt blue color and ink that is 25% cobalt blue color. how many ounces of each ink are needed to make 3 gallons (384 ounces) of ink that is 15% cobalt blue color? \n" ); document.write( "
Algebra.Com's Answer #707263 by ankor@dixie-net.com(22740)\"\" \"About 
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a printer has ink that is 5% cobalt blue color and ink that is 25% cobalt blue color.
\n" ); document.write( " how many ounces of each ink are needed to make 3 gallons (384 ounces) of ink that is 15% cobalt blue color?
\n" ); document.write( ":
\n" ); document.write( "let x = amt of 25% required
\n" ); document.write( "the total is to be 384 oz, therefore
\n" ); document.write( "(384-x) = amt of %5
\n" ); document.write( ":
\n" ); document.write( ".25x + .05(384 - x) = .15(384)
\n" ); document.write( ".25x + 19.2 - .05x = 57.6
\n" ); document.write( ".25x - .05x = 57.6 - 19.2
\n" ); document.write( ".2x = 38.4
\n" ); document.write( "x = 38.4/.2
\n" ); document.write( "x = 192 oz of the 25% stuff
\n" ); document.write( "then
\n" ); document.write( "384 - 192 = 192 oz of the 5% also\r
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