document.write( "Question 891928: Twenty liters of acid solution must be mixed with a 20% solution to get a 12% solution. How many liters of the 20% solution are needed? \n" ); document.write( "

Algebra.Com's Answer #543915 by josgarithmetic(39618) $\"\"$ $\"About$

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The problem description needs more information.\r
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\n" ); document.write( "\n" ); document.write( "Twenty liters of acid solution of unknown y percent;
\n" ); document.write( "Present is 20% acid solution;
\n" ); document.write( "Wanted is 12% acid solution.\r
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\n" ); document.write( "\n" ); document.write( "Let u = quantity of y% acid to mix with
\n" ); document.write( "v = quantity of 20% acid solution\r
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\n" ); document.write( "\n" ); document.write( " $\"highlight_green%28%28u%2Ay%2Bv%2A20%29%2F%28u%2Bv%29=12%29\"$ \r
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\n" ); document.write( "\n" ); document.write( "THREE unknown variables but just ONE equation.
\n" ); document.write( "The description is missing information for y and for u.
\n" ); document.write( "You can solve the equation for v, but finding a value is not possible until you have the other information. \n" ); document.write( "

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