Amy operates a coffee kiosk and is blending her special house coffee. She is mixing Kenya beans that cost $9.00 per pound with Colombia beans that cost $7.50 per pound to create a 30-pound blend that sells for $8.50 per pound. How many pounds of Kenya beans and how many pounds of Colombia beans does Amy need to use to create her blend? a. 20 lbs. of Kenya coffee beans and 10 lbs. of Colombia coffee beans
b. 5 lbs. of Kenya coffee beans and 25 lbs. of Colombia coffee beans
c. 15 lbs. of Kenya coffee beans and 15 lbs. of Colombia coffee beans
d. 10 lbs. of Kenya coffee beans and 20 lbs. of Colombia coffee beans