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Mathematics, 24.07.2021 14:40 tryintopassenioryear

Cửa hàng kinh doanh điện máy VT giảm giá mặt hàng tủ lạnh 20% so với tháng trước và doanh thu mặt hàng này đã tăng lên được 16%. a. Số lượng tủ lạnh bán ra của cửa hàng tăng bao nhiêu % so với tháng trước?

b. Hệ số co giãn của cầu theo giá của mặt hàng tủ lạnh là bao nhiêu?

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