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quanthikimchi
2 năm trước
Một tổ sản xuất dự định làm một lô giày trong 20 ngày.Khi sản xuất năng xuất lao động tăng thêm 20% nên chỉ trong 18 ngày tỏ ko những đã hoàn thành kế hoạch mà còn làm thêm đc 24 đôi giày nữa.Tính số giày tổ đã làm đc.
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