1000/4=250 kg trimise la fabrica de conserve
1000-250=750 restul de kg
I-----Iprima cantina
I-----I--I+150kg
750-150=600 egalam partile
600/2=300 kg prima cantina
300+150=450 kg a doua cantina
300*4=1200 lei plateste o cantina
450*4=1800 lei plateste cealalta cantina