Question

A store manager wishes to reduce the price of her fresh ground coffee by mixing two grades. If she has 50 pounds of coffee which sells for $1.20 per pound, how much coffee worth 80 cents per pound must she mix with it so that she can sell the final mixture for $1.00 per pound?

Answer 1

assume C and E types, which represent lbs of each.
C=50
50*1.20+.80E=1.00*(50+E)
60+.8E=50+E
.2E=10
E=50 lbs

Answer 2

thank you, thank you, thank you,