document.write( "Question 806111: A solution of 64% fertilizer is to be mixed with a solution of 22% fertilizer to form 84 L of a 57% solution. How many liters of the 64% solution must be used? \n" ); document.write( "
Algebra.Com's Answer #485670 by josgarithmetic(39618)\"\" \"About 
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u = volume of 22%
\n" ); document.write( "v = volume of 64%\r
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\n" ); document.write( "\n" ); document.write( "\"%2822u%2B64v%29%2F84=57\" and \"u%2Bv=84\"\r
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\n" ); document.write( "\n" ); document.write( "The system is of two linear equations in unknown variables u and v.
\n" ); document.write( "Solve for u and v.
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