問題詳情
22.某商品的原定價為每件40元，每星期可以賣出150件。如果調漲價格1元，則每個星期就會少賣3件；如果調降價格1元，則每個星期就會多賣3件， 已知該商品每件的成本為20元。問經最適當調整後每星期全部最多可以賺多少元？(請選最接近的數值)
(A) 3000
(B) 3
(C) 3
(D) 4000
(A) 3000
(B) 3
(C) 3
(D) 4000
參考答案
答案：C
難度：計算中-1
書單：沒有書單，新增
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