SOLUTION: soybean meal is 16% protein and corn meal is 9% protein. How many pounds of each should be mixed to get a 350 lb mixture that is 12% protein. Please explain with a table if possi

Question 665218: soybean meal is 16% protein and corn meal is 9% protein. How many pounds of each should be mixed to get a 350 lb mixture that is 12% protein. Please explain with a table if possible
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
The way I do it is to solve it in a straightforward way,
and then I can build any kind of table I want
-------------
Let = pounds of soybean meal needed
Let = pounds of corn meal needed
= pounds of protein in pounds of soybean meal
= pounds of protein in pounds of cornmeal
-------------
(1)
(2)
------------------------------
(2)
(2)
(2)
Multiply both sides of (1) by and
subtract (1) from (2)
(2)
(1)

and, since
(1)
(1)
(1)
150 pounds of soybean meal are needed
200 pounds of corn meal are needed
check answer:
(2)
(2)
(2)
(2)
(2)
OK- now you can make a table

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