SOLUTION: Soybean meal is 18%protein; cornmeal is 9% protein. How many pounds of each should be mixed together in order to get 360-lbs mixture that is 11%protein?

Question 490284: Soybean meal is 18%protein; cornmeal is 9% protein. How many pounds of each should be mixed together in order to get 360-lbs mixture that is 11%protein?
Answer by John10(297) (Show Source): You can put this solution on YOUR website!
Call each kind by a variable:
Let x be the amount of Soybean
y ---------------- cornmeal
The total amount of both kinds:
x + y = 360
The mixture:
0.18x + 0.09y = 0.11(360) = 39.6
So you solve the system of two linear equations:
x + y = 360
0.18x +0.09y = 39.6
Hint: 80 lbs of SOYBEAN and 280 lbs of CORNMEAL
John10:)
P.S" If you like my help with any Algebra classes (Math 116 or 117 classes), please visit my site or email me. Thanks!
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