Răspuns :
b+f+t =50
b=f
t =5+b
b+b+b+5=50
3b+5=50
3b=50-5
3b=45
b=45:3
b=15
t=b+5= 15+5=20
f=b=15
Baschet 15
Fotbal 15
Tenis 20
b=f
t =5+b
b+b+b+5=50
3b+5=50
3b=50-5
3b=45
b=45:3
b=15
t=b+5= 15+5=20
f=b=15
Baschet 15
Fotbal 15
Tenis 20