Correct answer: answer number 4 - nu e nevoie sa impart 1 kilogram la 3, impart toata cantitatea la 2

(1/3 + 1/3/2) * 1 kg = (1/3 + 1/6) * 1 kg = (2/6 + 1/6) * 1 kg = 3/6 * 1 kg = 1/2 * 1 kg
Deci cantitatea se imparte la doi, adica e nevoie de jumatate de kilogram = 500 grame