A Shop Specializes in Preparing Blends of Gourmet Coffees

A shop specializes in preparing blends of gourmet coffees. From Colombian, Costa Rican, and Kenyan coffees, the owner wishes to prepare 3-pounds bags that will sell for $8.50. The cost per pound of these coffees is $10, $6, and $8, respectively. The amount of Colombian is to be three times the amount of Costa Rican. Find the amount of each type of coffee in the blend.

A) 1.275 lb Colombian , 0.425 lb Costa Rican , 1.3 lb Kenyan
B) 1.575 lb Colombian , 0.525 lb Costa Rican , 0.9 lb Kenyan
C) 1.125 lb Colombian , 0.375 lb Costa Rican , 1.5 lb Kenyan
D) 1.125 lb Colombian , 0.375 lb Costa Rican , 3 lb Kenyan
E) 1.425 lb Colombian , 0.475 lb Costa Rican , 1.1 lb Kenyan