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Business, 14.06.2021 14:00 heavenwagner

Trong một thị trường cạnh tranh hoàn hảo, X là hàng hóa đồng nhất được sản xuất và tiêu dùng bởi rất nhiều người trên thị trường. Hàm số cung và hàm số cầu thị trường của hàng hóa X được ước lượng như sau: (S): PS = QS + 130
(D): PD = - 2QD + 400
(Đơn vị tính của QD, QS là đơn vị sản phẩm, đơn vị tính của P là đơn vị tiền/sản phẩm)
Giả sử các doanh nghiệp tham gia sản xuất trên thị trường này đều có hàm tổng chi phí sản xuất như nhau: TC = 25q2 + 20q + 225
a/ Anh/Chị hãy xác định mức giá và sản lượng cân bằng của hàng hóa X ở thị trường này.
b/ Tính độ co giãn của cầu theo giá tại mức giá cân bằng thị trường. Từ mức giá cân bằng này, nếu những người bán cạnh tranh nhau bằng cách giảm giá bán thì tổng chi tiêu của tất cả những người mua dành cho hàng hóa này sẽ tăng hay giảm?
c/ Xác định các phương trình chi phí ngắn hạn của doanh nghiệp: AFC, AVC, AC và MC.
d/ Xác định mức sản lượng mà mỗi doanh nghiệp cần sản xuất để tối đa hóa lợi nhuận. Tính lợi nhuận tối đa mà doanh nghiệp đạt được.
e/ Nếu chính phủ đánh thuế 6 đvt/đvsp thì sản lượng cân bằng mới, mức giá người tiêu dùng phải trả và mức giá nhà sản xuất thực nhận sau khi đã nộp thuế, tổng số tiền thuế chính phủ thu được từ ngành này là bao nhiêu?
f/ Mức giá thị trường là bao nhiêu thì doanh nghiệp bị lỗ nhưng vẫn tiếp tục sản
xuất để tối thiểu hóa lỗ?

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