Dintro sticluta de 100 ml cu sirop,Stefana a consumat cate 5 ml de 3 ori pe zi.Cati ml de sirop au ramas in sticluta, daca fetita a consumat sirop o saptamana.
o saptamana are 7 zile intr-o zi consuma 15 ml(5 *3 =15) 7*15 =105 nu a mai ramas nimic in sticluta sticluta are 100ml si ea intr-o saptamana consuma 105 ml
