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Moldo91
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14 vaci consuma in 5 zile 840 kg de hranaa . cat vor consuma 10 vaci in 12 zile

Răspuns :

Carmensoho
14 vaci ...............840kg...............5 zile
10 vaci................X........................12 zile

X=12x840x10/14x5
X=100800/70
X=1440kg

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