Răspuns:
Explicație pas cu pas:
2 sticle suc.............5 sticle apa--------92 lei /x2
4 sticle suc.............6 sticle apa...........112 lei
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4 sticle suc----------10 sticle apa ......184 lei
4 sticle suc ----------6 sticle apa ........112 lei
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/ 4 sticle apa .......72 lei
Cat costa o sticla de apa ?
72:4 =18 lei
Cat costa 6 sticle apa ?
18x 6=108 lei
Cat costa 4 sticle cu suc ?
112-108=4 lei
Cat costa o sticla de suc
4:4=1 leu
