SOLUTION: Soybean meal is 12% protein; Cornmeal is 6% protein. How many pounds of each should be mixed together to get a 240 pound mixture that is 7% protein?

Algebra ->  Algebra  -> Customizable Word Problem Solvers  -> Mixtures -> SOLUTION: Soybean meal is 12% protein; Cornmeal is 6% protein. How many pounds of each should be mixed together to get a 240 pound mixture that is 7% protein?      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com
Ad: Algebrator™ solves your algebra problems and provides step-by-step explanations!
Ad: Algebra Solved!™: algebra software solves algebra homework problems with step-by-step help!

   

Question 236541: Soybean meal is 12% protein; Cornmeal is 6% protein. How many pounds of each should be mixed together to get a 240 pound mixture that is 7% protein?
Answer by checkley77(12569) About Me  (Show Source):
You can put this solution on YOUR website!
.12x+.06(240-x)=.07*240
.12x+14.4-.06x=16.8
.06x=16.8-14,4
.06x=2.4
x=2.4/.06
x=40 pounds of soybeans was used.
240-40=200 pounds of cornmeal was used.
Proof:
.12*40+.06*200=16.8
4.8+12=16.8
16.8=16.8