Question

Soybean meal is 16% protein; cornmeal is 8% protein. How man pounds of each should be mixed together in order to get 320lbs mixture that is 10% protein?

Answer 1

You want 32 lbs of protein and this allows us to write a system of equations.
First to describe the amount of protein
.16x+.08y=32
Then for the overall weight
x+y=320
Where x is soybean and y is cornmeal.
From solving this system of equations we get 80lbs of soybean and 240 lbs of cornmeal.

Answer 2

Thanks!