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10 munatori ...18 zile
12 menatori ....x zile


Răspuns :

10 m ....... 18 zile

12 m ....... x zile

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x = 18 × 10 : 12 = 180 : 12 = 15 zile ( 12 muncitori )

Buna!

10 mentori...18 zile
12 mentori....x zile
=>10xX=12x18
10X=216
X=216:10
X=21,6 zile