document.write( "Question 622245: How much 10% acid solution should be mixed with 1 liter of 25% acid solution to produce a solution that is 15 % acid? need help with the formula a formula that I can plug these numbers into \n" ); document.write( "

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How much 10% acid solution should be mixed with 1 liter of 25% acid solution to produce a solution that is 15 % acid? need help with the formula a formula that I can plug these numbers into
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\n" ); document.write( "Do it like this:
\n" ); document.write( "if a 14% acid solution is mixed with a 19% acid solution to produce 45 gallons of a 15% acid solution how much (in gallons) of each solution should be used?
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\n" ); document.write( "f = 14%
\n" ); document.write( "n = 19%
\n" ); document.write( "----
\n" ); document.write( "f + n = 45 (total gallons)
\n" ); document.write( "14f + 19n = 15*45 (total acid)
\n" ); document.write( "-----
\n" ); document.write( "n = 45 - f
\n" ); document.write( "Sub for n
\n" ); document.write( "14f + 19*(45-f) = 675
\n" ); document.write( "14f + 855 - 19f = 675
\n" ); document.write( "-5f = -180
\n" ); document.write( "f = 36 gallons of 14%
\n" ); document.write( "n = 9 gallons of 19% \n" ); document.write( "

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