F + B + C = 5 300
B = C + 1 970
B = F -205 => F = B +205
F |____|+205 + 1 970
B |____|+1 970
C |____|
avem 3 segmente egale +205 + 1 970 +1 970 = 5 300
5 300 -( 1 970+1 970+205 ) = 5 300 - 4 145 = 1 155
1 155 : 3 = 385 ( un segment)
F = 385 + 205 + 1 970 = 2 560
B = 385 + 1 970 = 2 355
C = 385
Verificare:
2 560 + 2 355 + 385 = 5 300
2 560 femei
2 355 barbati
385 copii