camasa+costumas_rochie=93
rochia = 3+2camasi
costum=2rochii
/-----/ camasa
/-----/-----/ + 3 rochia
/----/-----/-----/-----/ + 3 +3 costum
total 93
7segmente+3+3+3=93
7segmente=93-9=84
7segmente=84
1segment=12
1 segment este camasa, deci costa 12 lei
2segmente+3=12x2+3=27 lei costa rochia
2 rochii=27x2=54 lei costumasul