SOLUTION: Dried raspberries sell for $4.50 per pound and oat flakes sell for $2.80 per pound. How many pounds of dried raspberries should be mixed with 12 pounds of oat flakes to get a mixtu

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: Dried raspberries sell for $4.50 per pound and oat flakes sell for $2.80 per pound. How many pounds of dried raspberries should be mixed with 12 pounds of oat flakes to get a mixtu      Log On


   

Question 1073152: Dried raspberries sell for $4.50 per pound and oat flakes sell for $2.80 per pound. How many pounds of dried raspberries should be mixed with 12 pounds of oat flakes to get a mixture that sells for $3.14 per pound?
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
R(4.50)+12(2.80)=(12+R)*3.14
4.5R+33.6=37.68+3.14R
1.36R=4.08
R=3 pounds.
3(4.50)+33.60=15(3.14) should be an identity
13.50+33.60=47.10 and it is