document.write( "Question 774119: How many gallons of a 40% alcohol solution must be mixed with 70 gallons of a 13% solution to obtain a solution that is 30% alchol? \n" ); document.write( "
Algebra.Com's Answer #472046 by josgarithmetic(39618)\"\" \"About 
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v = volume, gallons of the 40% alcohol to add
\n" ); document.write( "\"%28v%2A40%2B70%2A13%29%2F%28v%2B70%29=30\"
\n" ); document.write( "find v
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