Farmer X has 3 acres of land which she farms efficiently. Each acre can support 10 banana trees. However the 3 acres differ in their ability to support mango trees. She can grow 30 mango trees on the best land, 20 mango trees on the good land, and 10 mango trees on the bad land. If she initially is using 2 acres to grow mango, what would be the opportunity cost of growing another banana tree?

(a) If she initially has all of his land growing mangoes, what would be the opportunity cost of growing a banana tree? 2 mango trees?

(b) If she initially is using 2 acres to grow mangoes, what would be the opportunity cost of growing another banana tree?

(c)If she initially has all her land growing bananas, what would be the opportunity cost of growing an mango tree? 1/2 of an banana tree

(d) If she initially is growing mangoes on two acres, what would be the opportunity cost of growing another mango tree?

(e) If she initially has her land split between bananas and mangoes (1.5 acres growing banana trees and 1.5 acres growing mango trees), what would be the opportunity cost of growing another banana tree?