Arabica coffee costs $0.4 per ounce while Robusta coffee costs $0.3 per ounce. If the blend of Arabica and Robusta costs $0.35 per ounce, what is the share of Arabica in this blend?	Select:
A) 20%
B) 24%
C) 50%
D) 33%
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:   .4a + .3(1-a) = .35   .4a + .3 - .3a = .35   a= .5   therefore: .5/1 ounce = 50%. Therefore, the answer should be 50%
<result>C</result>
Arabica coffee costs $0.4 per ounce while Robusta coffee costs $0.3 per ounce. If the blend of Arabica and Robusta costs $0.35 per ounce, what is the share of Arabica in this blend?