Răspuns: Ana = A ; Mia = M ; Gina = G
M = A + 4
G = M + 4 => G = A + 4 + 4 => G = A + 8
Gigel = B ( de la baiatul)
B = 3/4A + 1/2M + 8
Rest la fete, R = 1/4 A + 1/2M + (G-8) = 44 |*4
A + 2M + 4G - 32 = 176
A + 2(A+4) + 4(A+8) - 32 = 176
A + 2A + 8 + 4A + 32 - 32 = 176
7A + 8 = 176
7A = 176 - 8
7A = 168
A = 168 / 7 = 24
M = A + 4 = 24 + 4 = 28
Deci
B = 3/4A + 1/2M + 8
B = (3/4)24 + (1/2)28 + 8
B = 18 + 14 + 8
B = 40
Gigel a primit 40 de portocale