50 POINTS!!!!! HELP 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 9% protein?How many pounds of cornmeal should be in the mixture? How many pounds of soybean should be in the mixture?
Accepted Solution
A:
The first thing we are going to do for this case is define variables. We have then: x: Amount of soybean meal 320 - x: quantity of cornmeal We now write the equation that models the problem: [tex]0.16x + 0.08 (320-x) = 0.09 (320)
[/tex] Rewriting we have: [tex]0.16x + 25.6 - 0.08x = 28.8
[/tex] From here, we clear x: [tex]0.16x - 0.08x = 28.8 - 25.6
0.08x = 3.2
x = 3.2 / 0.08
x = 40[/tex] Then, the amount of Soybean meal is: [tex]x = 40 lb
[/tex] The amount of cornmeal is: [tex]320 - x = 320 - 40 = 280 lb
[/tex] Answer: cornmeal: 280 lb Soybean: 40 lb.