document.write( "Question 839697: A chemist needs 10 L of 21% salt solution.
\n" ); document.write( "The chemist has two salt solutions available
\n" ); document.write( "at 15% and 25% salt. Write and solve a
\n" ); document.write( "linear system to find the volume of each
\n" ); document.write( "solution that needs to be combined to make
\n" ); document.write( "the mixture.
\n" ); document.write( "
\n" ); document.write( "

Algebra.Com's Answer #505818 by josgarithmetic(39617)\"\" \"About 
You can put this solution on YOUR website!
Very typical exercise for a two part mixture.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "u = volume of 15% salt
\n" ); document.write( "v = volume of 25% salt\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"%2815u%2B25v%29%2F10=21\" and \"u%2Bv=10\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "This is a system of two linear equations in two unknown variables. Solve for u and v.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "See lesson:
\n" ); document.write( "http://www.algebra.com/algebra/homework/word/mixtures/Mixtures%3A-All-in-Symbols.lesson
\n" ); document.write( "
\n" );