soybean 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%

How many pounds of the cornmeal should be in the mixture?_____pounds

How many pounds of the soybeans meals should be in the mixture?______pounds

1 answer

Let the number of pounds of corn meal be x and the number of pounds of soybean meal be y.

x + y = 240, for obvious reasons.

(0.06 x + 0.12 y)/240 = 0.1 (the fracttion that is protein)

Solve those two equations for x and y, using algdebra.

The sccond equation can be rewritten as
0.06x + 0.12y = 24, or
x + 2y = 400

Take it from there