# 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?

##### 1 Answer

160 pound of Soybeal (did you mean soya bean?)

80 pound Cornmeal

#### Explanation:

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

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Using

Dropping the units of measurement for now we have:

This

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Check

Objective is: Left hand side = Right hand side