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7,5 kg legume, morcovi si varza
1,50 lei costa morcovii
1,25 lei costa varza
total platit 9,95 lei
Daca ar fi cumparat decat varza?
7,5kg x 1,25=9,375 lei ar fi cheltuit pt varza
Dar Elena a platit 9,95lei, diferenta de bani este
9,95-9,375=0,575
Diferenta intre 1 kg de morcovi si 1 de varza este
1,50-1,25=0,25
Aflam ce cantitate de morcovi a cumparat:
0,575:0,25=2,3 kg morcovi
7,5 kg legume - 2,3 kg morcovi = 5,2 kg varza
Proba:
2,3x1,50 + 5,2x1,25 = 3,45+6,5=9,95 lei
2,3kg morcovi + 5,2kg varza = 7,5 kg legume