Suppose that you want to blend two coffees in order to obtain a new blend. the blend will be made with the best arabica beans that sell for 9.00$ per pound and select african robustas that sell for 11.50$ per pound to obtain 100 pounds of the new blend. the new blend will sell for $10.00 per pound and there is no difference in revenue. how many pounds of the arabica and the robusta beans are required?