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cum se face rezolvarea daca schema e asa
1kg struguri...200g stafide
?kg struguri...1kg stafide?



Răspuns :

1kg=1000g deci raspunsul este 1000x1000/200=1000000/200=5000g=5kg stafide

se numeste regula de 3 simpla

mai intai transformam kg in g

1000 g struguri..........200 g stafide

X g struguri.................1000 g stafide

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X= (1000*1000):200

X=5000 g=5 kg struguri