document.write( "Question 1181853: How many gallons of a 7% salt solution must be mixed with 20 gallons of a 13% solution to obtain a 10% solution \n" ); document.write( "

Algebra.Com's Answer #811794 by MathTherapy(10552) $\"\"$ $\"About$

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How many gallons of a 7% salt solution must be mixed with 20 gallons of a 13% solution to obtain a 10% solution
\n" ); document.write( "g look s like 15 gallons. <=== The ANSWER is NOT 15 gallons.\r
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ERROR again, from one of the MANY error-prone \"responders/respondents\" in this forum.
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document.write( "The 7%'s volume is being increased by 3% to 10%, while the 13%'s volume is being reduced by 3% to 10%. 
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document.write( "With 1 volume being increased and the other decreased by the same amount, the different concentrations to be mixed will be the same.
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document.write( "Therefore, CORRECT ANSWER:  \n" );
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