Question 12787: A coffee seller has one grade of coffee selling for $4 per pound and another for $6.50 per pound. He mixes the coffee to sell at $4.75 per pound and mixes 150 pounds. How much of each type does he use?
How do you do this? Answer by LilSkittleMd(119) (Show Source):
You can put this solution on YOUR website! Let x=coffee-$4 per pound
Let y=coffee-$6.50 per pound
Set up the two equations
Use substitution method to solve.
Combine like terms
Now substitute y into one of the original equations
105 pounds of the $4 per pound coffee was used
45 pounds of the $6.50 per pound coffee was used