Răspuns:
3 paini...........5 batoane=1525 gr
3paini............8 batoane =1900 gr
Aflam cat cantaresc 3 batoane
1900gr - 1525 = 375gr
Aflam cat cantareste un baton
375 : 3 = 125 gr
Apoi aflam cat cantaresc 3 paini
3 paini- (125x5) = 1525gr
3paini -625 =1525gr
3paini = 1525 - 625
3paini = 900gr
1paine = 900:3
1 paine = 300gr
Explicație pas cu pas: