ϴ
Ƽ() = 5

˴ϴ
ȭݽ(ƽ) = 20
5 渶(Ǽ) = 200
= 0.8 (8 ) +Ϸ+
= 0.8 (5 ) +Ϸ+
100 = 4 (ִ 300) +Ϸ+

߷Ÿ ҴƮ ˴ϴ
3ݸ ˴ϴ


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