math

posted by .

Soybean meal is 18% protein; cornmeal is 9% protein. How many pound of each should mixed together in order to get 360-lb mixture that is 13% protein

  • math -

    Start with:
    18-13=5 lbs of cornmeal
    13-9=4 lbs of soybeanmeal.
    Total = 9 lbs.
    Percentage of protein = (5*0.18+4*0.09)/(5+4)
    = 13%
    So for 360 lbs,
    weight of cornmean=(360/9)*5=200 lbs
    weight of soybeanmeal = (360/9)*4=160 lbs.

    By algebra:
    Let x=weight of cornmeal
    (360-x)=weight of soyabeanmeal
    (x*0.09+(360-x))/360 = 0.13
    Solve for x (=200 lbs of cornmeal)
    and 160 lbs of soyabeanmeal.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Algebra

    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 12% protein?
  2. math 116

    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 tha is 13% protein?
  3. algebra

    Soybean meal is 18% protein: cornmeal is 9% how many pounds of each should be mixed together in order to ge a 360 pound mixutre that is 13% protein: I get 200 cornmeal 160 soybean meal I think I put this backwards.
  4. algebra

    Soybean Meal Is 16% Protein; Cornmeal Is 8% Protein. How Many Pound Of Each Should Be Mixed Together In Order To Get 320 Lb. Mixture That Is 12% Protein?
  5. math

    Soybean Meal Is 16% Protein; Cornmeal Is 8% Protein. How Many Pound Of Each Should Be Mixed Together In Order To Get 320 Lb. Mixture That Is 15% Protein?
  6. Math

    Soybean meal is 18% protein, cornmeal is 9% protein. How many pounds of each should be mixed together in order to get a 360-lb mixture that is 10% protein?
  7. Math Algebra 1a

    Soybean meal is 18% protein, cornmeal is 9% protein. How many pounds of each should be mixed together in order to get a 360-lb mixture that is 10% protein?
  8. math

    Soybean meal is 18% protein, cornmeal is 9% protein. How many pounds of each should be mixed together in order to get a 360-lb mixture that is 10% protein?
  9. Math

    Soybean meal is 18% protein, cornmeal is 9% protein. how many pounds of each should be mixed together to get a 360 pound mixture that is 15% protein ?
  10. algebra

    Soybean meal is 14% protein, cornmeal is 7% protein. how many pound of each should be mixed together in order to get 280-lb mixture that is 13% protein?

More Similar Questions