Răspuns:
2 m stofa pt o pereche pantaloni si 3 m stofa pentru o rochie
Explicație pas cu pas:
6 rochii .................. 5 pantaloni ................ 28 m stofa - ( minus )
6 rochii ...................7 pantaloni ................. 32 m stofa
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.....///....................... 2 pantaloni ................. 4 m stofa
4 m : 2 pantaloni = 2 m / pantaloni
5 pantaloni x 2 m = 10 m stofa
28 m - 10 m = 18 m / 6 rochii
18 m : 6 rochii = 3 m/ rochie
V : 6 x 3 + 5 x 2 = 18 + 10 = 28