Răspuns:
9 c ___ 3 g ____ 75 kg |•2
6 c ___ 12 g ____ 90 kg |•3
18 c ___ 6 g ____ 150 kg
18 c ___ 36 g ___ 270 kg
30 g ___ 120 kg => 1 g = 40 kg
9 c ____ 3 g ____ 75 kg |•4
6 c ____ 12 g ____ 90 kg
36 c ___ 12 g ____ 300 kg
6 c ____ 12 g ____ 90 kg
30 c ___________ 210 kg => 1 c = 7 kg