Răspuns :
b+f=27
f=80/100 * b
↓ ↓
b + 80b/100 = 27 ⇔ 100b+80b = 2700
b = 2700:180=15 ( baieti )
si f = 27 - 15 = 12 ( fete )
f=80/100 * b
↓ ↓
b + 80b/100 = 27 ⇔ 100b+80b = 2700
b = 2700:180=15 ( baieti )
si f = 27 - 15 = 12 ( fete )