Question

cat costa initial un obiect daca dupa o sumpire cu 15% costa 34,5 lei?

Answer 1

15x/100=345/10
15x·10=345·100
150x=34500
x=34500/150
x=230 lei pretul initial

Answer 2

$\frac{15x}{100}$=$\frac{345}{10}$
15x·10=345·100
150x=34500
x=$\frac{34500}{150}$
x=230