document.write( "Question 784979: Howw many liters of pure water should be mixed with a 5L solution of 50% acid to produce a mixture that is 80% water \n" ); document.write( "
Algebra.Com's Answer #477320 by josgarithmetic(39620)\"\" \"About 
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This must assume the concentrations are volume per volume.\r
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\n" ); document.write( "\n" ); document.write( "Let v = volume of water to add, in liters.
\n" ); document.write( "80% water would be consistent with 20% acid.
\n" ); document.write( "The equation will be arranged according to concentration of acid, although it could be done according to the water:\r
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\n" ); document.write( "\n" ); document.write( "\"5%2A50%2F%285%2Bv%29=20\"\r
\n" ); document.write( "\n" ); document.write( "Solve for v.
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