Posted by Jamie on Thursday, February 9, 2012 at 7:19pm.
Soybean meal is 14% protein; cornmeal is 7% protein. How many pounds of each should be mixed together in order to get 280lb mixture that is 10% protein?

Algebra  Steve, Thursday, February 9, 2012 at 9:29pm
.14s + .07(280s) = .10*280
.14s + 19.6  .07s = 28
.07s = 8.4
s = 120
so, use 120 lbs of soybean and 160 lbs of corn 
liner algebra  Chandresh, Monday, November 24, 2014 at 4:18pm
x+y=2
yx=2 
liner Algebra  Chandresh, Monday, November 24, 2014 at 4:20pm
x+y=2
yx=2