document.write( "Question 1182358: How many ounces of a 40% alcohol solution must be mixed with 12 ounces of a 45% alcohol solution to make a 43% alcohol​ solution? \n" ); document.write( "
Algebra.Com's Answer #812367 by greenestamps(13200)\"\" \"About 
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\n" ); document.write( "Here is a non-algebraic method for solving any two-part mixture problem like this. If your mental math is good, you will get to the answer much faster than with formal algebra.

\n" ); document.write( "You are starting with some 45% alcohol and adding some 40% alcohol to get 43% alcohol.

\n" ); document.write( "Picture that as starting at 45 on a number line and walking towards 40, stopping when you get to 43.

\n" ); document.write( "From 45 to 40 is a distance of 5; from 45 to 43 is a distance of 2; so when you stop at 43 you have walked 2/5 of the way from 45 to 40.

\n" ); document.write( "That means 2/5 of the mixture is what you are adding.

\n" ); document.write( "So the 12 ounces of 45% alcohol you started with is 3/5 of the mixture; since 3/5 of the mixture is 12 ounces, 2/5 of the mixture is 8 ounces.

\n" ); document.write( "ANSWER: 8 ounces

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