1 --- 3
2 --- 4
3 --- 5
5 --- 6
7 --- 7
6 --- 8
4 --- 9
2 --- 10
Trebuie sa aflam cati elevi sunt
1+2+3+5+7+6+4+2=30
p% * 30 = 6 ( 6 reprezinta nr elevilor care au luat nota 8 )
p/100 * 30 = 6
30p/100 = 6
3p/10= 6
3p = 60
p = 20 %
