Question 182725
Making the assumption that only soybean meal and cornmeal are added to the mixture. We get x = amount of soybean meal and y = amount of cornmeal 
x+y = 320. 
solving for y we get y =320 -x.

We also know that 0.16(x) + .08(y) = 320*(.13)
:
.16x + 0.08(320-x) = 41.6
:
0.08x + 25.6 = 41.6
:
0.08x = 16
:
{{{highlight(x = 200)}}}pounds of soybean 
:
y=320-x:{{{highlight(y=320-200=120)}}}pounds of cornmeal