document.write( "Question 729631: How many liters each of 8%, 10%, and 20% hydrogen peroxide should be mixed together to get 8 liters of 12.5% solution, if the amount of 8% solution used must be 2 liters more than the amount of 20% solution used? \n" ); document.write( "

Algebra.Com's Answer #853152 by josgarithmetic(39701) $\"\"$ $\"About$

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document.write( "Concentration, %          Volume, liters                pure hydrogen peroxide\r\n" );
document.write( "          8                       v+2                        0.08(v+2)\r\n" );
document.write( "         10                       8-(v+2)-v=6-2v            0.1(6-2v)\r\n" );
document.write( "         20                        v                         0.2v\r\n" );
document.write( "TOTAL    12.5                      8\r\n" );
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\n" ); document.write( " $\"%288%28v%2B2%29%2B10%286-2v%29%2B20v%29%2F8=12.5\"$ , to represent the final concentration.
\n" ); document.write( "Simplify and solve.... \n" ); document.write( "

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