SOLUTION: A merchant has coffee worth $4 per lb. that she wishes to mix 50 pounds of coffee worth $9 per lb. to get a mixture worth $8 per lb. How many pounds of the $4 coffee should be used

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: A merchant has coffee worth $4 per lb. that she wishes to mix 50 pounds of coffee worth $9 per lb. to get a mixture worth $8 per lb. How many pounds of the $4 coffee should be used      Log On


   

Question 518886: A merchant has coffee worth $4 per lb. that she wishes to mix 50 pounds of coffee worth $9 per lb. to get a mixture worth $8 per lb. How many pounds of the $4 coffee should be used? I keep getting 112.5 lbs.
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
4x+9*50=8*(50+x)
12.5 lbs not 112.5 lbs