SOLUTION: soybean meal is 18% protein,cornmeal is 9% protein.How many pounds of each should be mixed together in order to get 360-lb mixture that is 17% protein

Question 545080: soybean meal is 18% protein,cornmeal is 9% protein.How many pounds of each should be mixed together in order to get 360-lb mixture that is 17% protein
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = pounds of soybean meal needed
Let = pounds of cornmeal needed
given:
(1)
(2)
--------------------------
(2)
(2)
(2)
---------------------
Multiply both sides of (1) by ,
and subtract (1) from (2)
(2)
(1)

and, since
(1)
(1)
(1)
320 pounds of soybean meal are needed
40 pounds of cornmeal are needed
check answer:
(2)
(2)
(2)
(2)
OK
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