SOLUTION: a feed store has one thousand pounds of a mixture that is 90% oats. how many pounds of other ingridients must be added to make the mixture 80% oats?

Algebra ->  Customizable Word Problem Solvers  -> Mixtures -> SOLUTION: a feed store has one thousand pounds of a mixture that is 90% oats. how many pounds of other ingridients must be added to make the mixture 80% oats?      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 399321: a feed store has one thousand pounds of a mixture that is 90% oats. how many pounds of other ingridients must be added to make the mixture 80% oats?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let x = pounds of other ingredients to add
Oats in 1000 pounds = .9%2A1000+=+900
900%2F%281000+%2B+x%29+=+.8
900+=+.8%2A%281000+%2B+x%29
900+=+800+%2B+.8x
.8x+=+100
x+=+125
125 pounds of other ingredients must be added