Răspuns:
Explicație pas cu pas:
5 costume copii_____4 costume dama_____22 m/x3
3 costume copii_____5 costume dama_____21 m/x5
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15 costume copii_____12 costume dama_____66 m
15 costume copii_____25 costume dama_____105m
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//______________13 costume dama_____39m
1 costum de dama=39:13
1 costum de dama=3m
5 costume copii+4x3=22m
5 costume copii+12=22 m
5cotume copii=10m
1 costum copii=10:5
1 costum copii=2m
2costume copii x 2m x 31 lei/m=4x31=124 lei
1costum dama x 3m x 31lei/m= 3x31=93 lei
