Let s represent the amount of the high-priced coffee. The total cost can be computed as

5.60s + 3.50(7-s) = 33.95

2.10s = 9.45 (subtract 24.50)

s = 4.5 (divide by 2.1)

4.5 pounds of Sri Lankan were mixed with 2.5 pounds of Kenyan.

5.60s + 3.50(7-s) = 33.95

2.10s = 9.45 (subtract 24.50)

s = 4.5 (divide by 2.1)

4.5 pounds of Sri Lankan were mixed with 2.5 pounds of Kenyan.