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xuanlt
2 năm trước
1 bếp ăn chuẩn bị đủ thực phẩm cho 300 người ăn trong 4 ngày . Vì có thêm 1 số người đến ăn nên số thực phẩm đó chỉ đủ ăn trong 3 ngày ? Hỏi số người mới đến là bn ? ( mức ăn như nhau )
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