nhan dip ki niem 5 nam toan quoc phat dong phong trao " toan dan doi mu bao hiem khi ngoi tren mo to , xe may " , cac cua hang ban mu hon da da giam gia 20% , vi vay moi chiec mu chi ban voi gia 120 000 dong . hoi :
a, gia ban dau (khi chua giam gia ) cua moi chiec mu la bao nhieu ?
b,neu muonban moi cai mu voi gia ban dau thi phai tang bao nhieu phan tram ?