document.write( "Question 1127812: Five gallons of a 20% alcohol solution is added to 3 gallons of 30% solution. Two gallons of pure alcohol is added to the resulting solution. What shall be its percentage of concentration of the final solution? \n" ); document.write( "
Algebra.Com's Answer #744265 by greenestamps(13200)\"\" \"About 
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\n" ); document.write( "(total amount of alcohol) divided by (total amount of solution), converted to a percent.

\n" ); document.write( "The amount of alcohol is 20% of the 5 gallons, plus 30% of the 3 gallons, plus 100% of the 2 gallons. The amount of solution is 5 gallons plus 3 gallons plus 2 gallons.

\n" ); document.write( "\"%28%28.20%29%285%29%2B.30%283%29%2B1%282%29%29%2F%285%2B3%2B2%29+=+3.9%2F10+=+39%2F100\" = 39%
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