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lucdznhat
2 năm trước
Một thửa ruộng hình chữ nhật có chu vi dài 280 m chiều rộng bằng 3/4 chiều dài người ta đem trồng lúa trên thửa ruộng đó cứ 100 mét vuông thu được 62 kg thóc A,Tính chiều dài và chiều rộng của thửa ruộng B. Mọi người ta đã thu hoạch được bao nhiêu tạ thóc trên thửa ruộng đó C, người ta lấy 50% số thóc đó đem bán lấy tiền dễ chi tiêu giá tiền một kg thóc là 3000₫ tính số tiền thóc bán được Tìm số tự nhiên có 6 chữ số biết chữ số ở hàng đơn vị là 4 Nếu chuyển chữ số hàng đơn vị lên đầu thì được số mới gấp lần 4 số cũ
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