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Pentu o gradinita s -au cumparat 15l de suc.Din intreaga cantitate ,o treime depozitata in sticle de 5dl,iar restul in sticle de 250ml.Cate sticlecu suc s-au cumparat?

Răspuns :

5dl= 0.5 l
250 ml=0.25l

Stoc total: 15 l
1/3*15l=5l:0.5l=10(sticle de 0.5 l)

15l-5l=10l
10l : 0.25l=40 (sticle de 0.25l)