Question

In clasa sunt 28 elevi.Fete sunt cu 2 mai multe decat baieti.Cate fete si cati baieti sunt?

Answer 1

b+f=28
f=b+2
b+b+2=28
2b+2=28
2b=28-2
2b=26
b=26:2
b=13
f=13+2
f=15

Answer 2

F /----/+2        Total 28
 B /----/
28-2=26
26:2=13
F=13+2=15
B=13