Question

soybean meal is 18% protein, cornmeal is 9% protein. How many pounds should be mixed of each to get 360 pounds of mixture that is 17% protein?

Answer 1

I've seen this question 4 times on Openstudy :-P

x + y = 360
0.18x + 0.9y = 0.17*360

Answer 2

oops it's 0.09y

Solve using gaussian elimination

Answer 3

lol - must be a standard ques!! I am still confused

Answer 4

I need hoe many pounds of cornmeal and how many pounds of soybean meal

Answer 5

http://www.wolframalpha.com/input/?i=rref%28 [[1%2C1%2C360]%2C[0.18%2C0.09%2C+0.17*360]]%29

Answer 6

link is broken :-P

Answer 7

\[\url{ http://www.wolframalpha.com/input/?i=rref%28 [[1%2C1%2C360]%2C[0.18%2C0.09%2C+0.17*360]]%29}\]

Answer 8

still broken :-(

Answer 9

http://www.wolframalpha.com/input/?i=rref%28%28%281%2C1%2C360%29%2C%280.18%2C0.09%2C+0.17*360%29%29%29

Answer 10

so 320 of cornmeal and 40 of soybean????

Answer 11

yes

Answer 12

you ROCK!!! Thanks

Answer 13

How about checking out the oj prob?!?!?! :oP