👤

8,5kg de cartofi costa 20,4lei.Cit costa 12kg de cartofi


Răspuns :

20,4lei/8,5kg = 2,4lei/kg
12 x 2,4 = 28,8 lei
8.5------20.4
12--------x
x=12*20.4/8.5
x=28.8