SOLUTION: Grain worth 65 cents per pond was mixed with grain worth 90 cents per pounds to produce 20 pounds of a mixture worth 80 cents per pound. How many pounds of each were used?

Algebra ->  Customizable Word Problem Solvers  -> Misc -> SOLUTION: Grain worth 65 cents per pond was mixed with grain worth 90 cents per pounds to produce 20 pounds of a mixture worth 80 cents per pound. How many pounds of each were used?       Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 1072616: Grain worth 65 cents per pond was mixed with grain worth 90 cents per pounds to produce 20 pounds of a mixture worth 80 cents per pound. How many pounds of each were used?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
%2865x%2B90%2Ay%29=80%2A20
13x%2B18y=80%2A4
13x%2B18y=320

13%2820-y%29%2B18y=320
260-13y%2B18y=320
5y=320-260
5y=60

highlight%28y=12%29 of the 90 cent per pound

highlight%28x=8%29 of the 65 cent per pound