如果我有$10,
我想買水果(i.e. apple,banana, orange, peach, mango &lemon)
但系每個水果都值$10,
here is my ranking:
1. mango
2. apple
3. banana
4. peach
5. lemon
6. orange
即系我想買mango,唔買apple
apple就系opportunity cost
不過,
我唔明白點解會系為mango而放棄2(apple)
而唔系放棄2-6呢?
please help! tks