Soybeal meal is 12% protein; cornmeal is 6% protein. How many pounds of each should be mixed together in order to get 240 lb mixture that is 10% protein?
160 pound of Soybeal (did you mean soya bean?)
80 pound Cornmeal
The key point is that you need as many equations as the count of unknown values.
Let the amount of Soybeal meal be
Let the amount of cornmeal be
Then by protein content we have:
We have two unknowns ans just one equation so we need th build another equation.
We know that the total blend weighs
Dropping the units of measurement for now we have:
Objective is: Left hand side = Right hand side