Question

La un hotel de la mare camera costa 50 ron pe noapte.cat va costa dupa o scumpire de 15%?

Answer 1

50 ron.............100%
x.......................100+15=115%

x=115*50:100= 57, 5 ron

Answer 2

$15\% \ din \ 50= \frac{15}{100}*50= \frac{15}{2} *1 = 7,5 ron -scumpirea \\\\\\ 50+7,5 \to \boxed{57,5 \ ron - noul \ pret}$