SOLUTION: For some reason I cannot remember the formula for this problem, I know that I could solve it if I could remember the formula. Soybean meal is 12% protein; cornmeal is 6% protein.

Algebra ->  Functions -> SOLUTION: For some reason I cannot remember the formula for this problem, I know that I could solve it if I could remember the formula. Soybean meal is 12% protein; cornmeal is 6% protein.       Log On


   

Question 173893: For some reason I cannot remember the formula for this problem, I know that I could solve it if I could remember the formula.
Soybean meal is 12% protein; cornmeal is 6% protein. How many pounds of each should be mixed together in order to get a 240lb mixture taht is 8% protein?
How many lbs of the cornmeal should be in the mixture?
How many lbs of the soybean meal should be in the mixture?
Would the formula be .12x + .06y=240?
Answer by nerdybill(7384) About Me  (Show Source):
You can put this solution on YOUR website!
Let x = pounds of soybean meal
then
240-x = pounds of cornmeal
.
"amt of protein from soybean" + "amt of protein from cornmeal" = "desired amt of protein"
.12x + .06(240-x) = .08(240)
.12x + 14.4 - .06x = 19.2
.06x = 4.8
x = 80 pounds (soybean meal)
.
cornmeal:
240-x = 240-80 = 160 pounds