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quynhduongthptyl
2 năm trước
Câu 3 (1,0 điểm). Trong dịch viêm đường hô hấp cấp CoVid 19 vừa qua, có một cửa hàng thuốc tại Ninh Bình đã thực hiện chương trình phát khẩu trang miễn phí cho người dân. Ban đầu của hàng này định phát 3500 chiếc. Nhưng khi đó trong mỗi hộp khẩu trang đã được nhà sản xuất tăng thêm 5 chiếc so với ban đầu. Do đó của hàng đã phát giảm đi 5 hộp so với dự kiến Tuy vậy tổng số khẩu trang của cửa hàng này đã phát ra viễn tăng lên so với dự kiến ban đầu là 75 chiếc Hỏi ban đầu của hàng định phát bao nhiêu hộp, mỗi hộp bao nhiêu chiếc
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