Question 1143970
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Other tutors have shown two standard algebraic solution methods for solving this kind of problem, one using two variables and one using a single variable.<br>
Here is a non-algebraic method for solving mixture problems that will get you to the answer with just a few simple calculations.  If the numbers are "nice", as in this example, you can probably do the calculations mentally.<br>
Here are the two simple steps for this method of solving this problem.<br>
(1) 30% is 1/4 of the way from 20% to 60%.  (Imagine the three percentages -- 20, 30, and 60 -- on a number line; 30 is 1/4 of the way from 20 to 60.)<br>
(2) That means 1/4 of the mixture must be the feed supplement with 60% protein.<br>
ANSWER: 1/4 of 3600 pounds = 900 pounds of the 60% protein feed supplement; the remaining 2700 pounds of the 20% corn meal feed.