Question

soybean meal is 16% protein; cornmeal is 8% protein. How many pounds of each should be mixed together in order to get 320 pind mixture that is 11% protein?
how many pounds of cornmeal?
how many pounds of soybean meal?

Answer 1

tough

Answer 2

i know. :(

Answer 3

s + c = 320 ; s = 320-c

s(.16) + c(.08) = 320(.11)

(320-c)(.16) + c(.08) = 320(.11)

Answer 4

51.2 -.16c +.08c = 35.2
-35.2 = c(.16 -.08)
-----------------------------
16 = c(.08)


16/.08 = c

1600/8 = c = 200

Answer 5

200 cornmeal
120 soybean
------------
320 total

Answer 6

AHHHH i see. Thank you!

Answer 7

yep :)