> Dduoc biet, chi phi' trung binh cho mot nam hoc o Mi la khoang 20.000 USD, > trong do cac gia dinh hoc sinh phai chiu 67.9% chi phi na`y, chinh phu > Vietnam tai tro 5.9% va chinh phu Mi tai tro 0.8%." > Cheers. > Tuan Bui 67.9% + 5.9% + 0.8% = 74.6% < 100% Pha^`n co`n la.i (25.4%) do ai tra? dda^y, ba'c Tuan Bui tra? ho^. nhe' Giang