Homework Help: algebra

Posted by Anonymous on Monday, March 17, 2008 at 9:19pm.

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 11% protein?

How many pounds of cornmeal should be in the mixture?

How many pounds of the soybean meal should be in the mixture?

algebra - Reiny, Monday, March 17, 2008 at 9:24pm
let the amount of soybean be x lb
let the amount of cornmeal be 360-x lbs

so .18x + .09(360-x) = .11(360)

I would multiply the equation by 100, then its easy

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