algebra
posted by Anonymous .
Soybean meal is 18% protein, cornmeal is 9% protein. How many pounds of each should be mixed together in order to get 360lb mixture that is 11% protein?
How many pounds of cornmeal should be in the mixture?
How many pounds of the soybean meal should be in the mixture?

let the amount of soybean be x lb
let the amount of cornmeal be 360x lbs
so .18x + .09(360x) = .11(360)
I would multiply the equation by 100, then its easy