de lam mon dua kho thit ta can co cui dua( com dua) thit ba chi duong nuoc mam muoi.Luong thit ba chi va luong duong theo thu tu bang \(\frac{2}{3}\)va 5%luong cui dua .Neu co 0,8 kg thit ba chi thi phai can bo nhieu kg cui dua bao nhieu kg duong?
cac ban giai nhanh nhe thank you