Question

Dupq ce s-a scumpit cu 19% un obiect costa 357 lei. Pretul initial era....

Answer 1

x=100% pretul initial
100%+19%=199%
119%=357
119\100*x=357
x=35700:119
x=300 lei

Answer 2

$x+ \frac{19}{100} *x=357 \\ \frac{100x}{100} + \frac{19x}{100} =357 \\ \frac{119x}{100} =357 \\ 119x=357*100 \\ 119x=35700 \\ x= \frac{35700}{119} \\ x=300$