SOLUTION: soybean meal is 12%protein, cornmeal is 6% protein, how many poinds of each should you mix together in order to get 240lb mixture that is 7%protein? 12x+6x-7=240?

Question 353161: soybean meal is 12%protein, cornmeal is 6% protein, how many poinds of each should you mix together in order to get 240lb mixture that is 7%protein?
12x+6x-7=240?
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
First name your variables.
Let S be the amount of soybean meal.
Let C be the amount of corn meal.
Now find the total weight equation.
1.
Now find the protein concentration equation.

2.
Now you have 2 equations with 2 unknowns.
Multiply eq. 1 by (-3) and add the equations together.

lb.
Then from eq. 1,

lb.
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