document.write( "Question 749834: how to mix a 10%solution and a 30% solution to get 1000ml of a 12% solution? \n" ); document.write( "
Algebra.Com's Answer #456174 by josgarithmetic(39618)\"\" \"About 
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how to mix a L% solution and a H% solution to get M ml of a T% solution?\r
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\n" ); document.write( "\n" ); document.write( "Let u = amount of L%
\n" ); document.write( "Let v = amount of H%\r
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\n" ); document.write( "\n" ); document.write( "\"%28Lu%2BHv%29%2FM=T\" and \"u%2Bv=M\"
\n" ); document.write( "Those are two equations with two unknown variables. Solve for u and v.\r
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\n" ); document.write( "\n" ); document.write( "Substitute the given values to find the values for u and v.
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