Ajutati-ma va rog ex 21
![Ajutatima Va Rog Ex 21 class=](https://ro-static.z-dn.net/files/d63/cc368309779e135728bb8b3646fdd278.jpg)
Media clasei:(4x10+5x9+6x8+7x7+5x6+4x5+3x4+2x3):36=
(40+45+48+49+30+20+12+6):36=
250:36=
6,9(4)