Arabica coffee costs $0.6 per ounce while Robusta coffee costs $0.5 per ounce. If the blend of Arabica and Robusta costs $0.55 per ounce, what is the share of Arabica in this blend?	Choose the correct choice from the following answers
A) 20%
B) 24%
C) 30%
D) 50%
E) 40%
a= amount of arabica coffee   1-a = amount of robusta coffee. because if you subtract a from the 1 ounce, the remaining amount is robusta   therefore:   .6a + .5(1-a) = .55   .6a + .5 - .3a = .55   a= .5   therefore: .5/1 ounce = 50%. Therefore, the answer should be 50%
<result>D</result>
Arabica coffee costs $0.6 per ounce while Robusta coffee costs $0.5 per ounce. If the blend of Arabica and Robusta costs $0.55 per ounce, what is the share of Arabica in this blend?