x/5 + x/4 + x/3 + 351 = x
Numitor comun 60
12x+15x+20x+351•60=60x
351•60=60x-47x
351•60=13x
x=(351•60)/13
x=27•60
x=1620 kg totalul
I zi - 1620/5 = 324 kg
II zi - 1620/4 = 405 kg
III zi - 1620/3 = 540 kg
IV zi - 351 kg
