O lingurita de sirop de 2 ori pe zi timp de 5 zile
Adica 2×5=10 lingurite timp de 5 zile
O lingurita=5 ml sirop
a) In 5 zile s-a consumat o cantitate de sirop= 5×10=50 ml sirop
b) Sticla de sirop=150 ml
S-au consumat 50 ml sirop
Au ramas: 150-50=100 ml sirop