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Din 5kg de faina se scot 6 kg de paine.Cate kg de paine se scot din 12 saci cu faina ,fiecare avand 70kg?Rezolvati in doua moduri.

Răspuns :

12x70kg=840kg

5kg faina-------------------6 paini
840kg--------------------------x
5/840=6/x
x=(840·6)/5
x=1008 paini