din 80 de kg de cartofi se obține 14 kg de amidondin câte kilograme de cartofi se vor obține 42 de kg de amidon va rog la matemateca prin metoda de mărimi derect proportional
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Răspuns: ≈ 246 kg/cartofi
Explicație pas cu pas:
80 kg/cartofi ................... 14 kg/amidon
X kg/cartofi .................... 43 kg/amidon
X = 80 x 43 : 14 = 3440 : 14 ≈ 246 kg/cartofi
80/X = 14/43
80 x 43 = 14 x X
3440 = 14X
X = 3440 : 14
X = 245,71428 ≈ 246
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