Question 210054
Soybean meal is 12% protein, cornmeal is 6% proteins. 
how many pounds of each should be mixed together in order to get 240lb mixture that is 9% proteins.
:
let x = amt of Soy Meal
A 240 lb mixture, therefore:
(240-x) = amt of cornmeal
:
.12x + .06(240-x) = .09(240)
:
.12x + .14.4 - .06x = 21.6
:
.12x - .06x = 21.6 - 14.4
:
.06x = 7.2
x = {{{7.2/.06}}}
x = 120 lb of soy meal
then
240 - 120 = 120 lb of corn meal
:
:
How many pounds of cornmeal? 120 lb
How many pounds of soybean? 120 lb