SOLUTION: I have so much trouble with word problems, please help me. Soybean meal is 16% protein. Cornmeal is 8% protein. How many pounds of each should be mixed together in order to get 3

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Question 126498: I have so much trouble with word problems, please help me.
Soybean meal is 16% protein. Cornmeal is 8% protein. How many pounds of each should be mixed together in order to get 320-lb mixture that is 15% protein? Thank you far any help you can give.
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
let x="soybean (16%)", so 320-x="corn (8%)"

(16%)(x)+(8%)(320-x)=(14%)(320) __ .16x+25.6-.08x=44.8 __ .08x=19.2