Question 375337
Soybean meals is 18% protein; cornmeal is 9% protein.  How many pounds of each should be mixed together in order to get 360-1b mixture that is 11% protein.

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Soybean meals is 18% protein; : x lb
cornmeal is 9% protein.  : 360-x lb
360-1b mixture that is 11% protein.
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Concentration equation

18*x+9(360-x)=11*360
18x+3240-9x=3960
9x+3240=3960
-3240
9x=3960-3240
9x=720
/9
x= 80 lb soyabean
y = 360-x = 240 lb cornmeal

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m.ananth@hotmail.ca