Răspuns:
1 sticla ........................ 750 ml
2 sticle ....................... X ml
1/2 = 750/x
x = 750 × 2 = 1500 ml = 1,5 l
1 sticla ........................ 750 ml
10 sticle ....................... X ml
1/10 = 750/x
x = 750 × 10 = 7500 ml = 7,5 l
1 sticla ........................ 750 ml
16 sticle ....................... X ml
1/16 = 750/x
x = 750 × 16 = 12000 ml = 12 l