Răspuns :
80 = 10 + 70
80 = 20 + 60
80 = 30 + 50
80 = 40 + 40
80 = 50 + 30
80 = 60 + 20
80 = 70 + 10
80 = 20 + 60
80 = 30 + 50
80 = 40 + 40
80 = 50 + 30
80 = 60 + 20
80 = 70 + 10