Mot cua hang co hai kho chua hang. Kho 1 chua 60 ta. Kho 2 chua 80 ta. Sau khi ban o kho 2 so hang gap ba lan so hang ban duoc o kho 1 thi so hang con lai o kho 1 gap doi so hang con lai o kho 2 . Tinh so hang da ban o moi kho
GIUP MINH VOI MAI MINH HOC ROI