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vanhanhyson
2 năm trước
để đảm bảo dinh dưỡng bữa ăn hằng ngày thì mỗi gia đình 4 thành viên cần 900 đơn vị prote6in và 400 đơn vị Lipit trong thức ăn hằng ngày .Mỗi kilogam thịt bò chứa 800 đơn vị protêin và 200 đơn vị Lipit,còn mỗi kilogam thịt heo chứa 600 đơn vị protêin và 400 đơn vị Lipit.Giá thịt bò là 100 000 đồng/kg và thịt heo là 70 000 đồng/kg.hỏi cần bao nhiêu thịt bò và thịt heo để đảm bảo dinh dưỡng hằng ngày cho 4 người?
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