3 costume.....5 rochii......21 m
3 costume......7 rochii......27 m
5 costume=?
4 rochii=?
7-5=2 rochii
27m-21m=6m (2 rochii)
6:2=3m pt o rochie
5×3=15m
21-15=6m
6:3=2m pt un costum
V 3×2+5×3=6+15=21 m
Si acum raspunsul la intrebare:
5 costume×2m=10m
4 rochii×3m=12m