document.write( "Question 1152731: A dairy farmer wants to mix a 55% protein supplement and a standard 25% protein ration to make 1200 pounds of a high-grade 45% protein ration. How many pounds of each should he use? \n" ); document.write( "
Algebra.Com's Answer #774830 by greenestamps(13203)\"\" \"About 
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\n" ); document.write( "Certainly if you are going to use a formal algebraic method to solve the problem you should use a single variable; the amount of work you need to do will be much less than if you use two variables.

\n" ); document.write( "Or here is a non-algebraic method that requires far less effort than the single variable algebraic method.

\n" ); document.write( "Consider the three percentages on a number line; specifically, look at where the 45% of the mixture lies in relation to the 25% and 55% of the two ingredients.
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document.write( "    25 -------------- 45 ------- 55

\n" ); document.write( "Using any number of possible different calculations, find that 45% is two-thirds of the way from 25% to 55%.

\n" ); document.write( "That means 2/3 of the mixture needs to be the 55% ingredient.

\n" ); document.write( "ANSWER:
\n" ); document.write( "55% protein supplement: 2/3 of 1200 pounds, or 800 pounds
\n" ); document.write( "standard 25% protein ration: 1/3 of 1200 pounds, or 400 pounds

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