Cuối HK1 vua qua hs 1 trung duoc xep thanh 4 loai : G,K,TB,Y. Biet so hs Kha la 114 em chiem 38% tong so hoc sinh toan truong .
Tinh :
A, tong so hs toan truong
B, Tinh so hs TB , biet neu chuyen 6 hs tu Y len TB thi hs yeu bang 4% s hs TB
CAC BAN GIAI GIUP MINH NHE. CAM ON CAC BAN