SOLUTION: soybean meal is 18% protien; cornmeal is 9% protien. How many pounds of each should be mixed together in order to get 390-lb mixture that is 11% protien? how many pounds of the co

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Question 186344: soybean meal is 18% protien; cornmeal is 9% protien. How many pounds of each should be mixed together in order to get 390-lb mixture that is 11% protien?
how many pounds of the cornmeal should be in the mixtue?
how many pounds of the soybean meal should be in the mixture?
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
.18x+.09(390-x)=.11*390
.18x+35.1-.09=42.9
.09x=42.9-35.1
.09x=7.8
x=7.8/.09
x=86.667 lbs. of soybean meal is used.
390-86.667=303.333 lbs. of cornmeal is used.
Proof:
.18*86.667+.09*303.333=.11*390
15.60+27.3=42.9
42.9=42.9