Question

Dupa o reducere cu 10% un produs costa 35 lei .Aflati pretul initial.

Answer 1

$x\to pretul initial \\\\ 10\% \ din \ x =\frac{\not 10}{\not 100} *x= \frac{1}{10}*x \to \frac{x}{10}-reducerea \\\\ x^{(10}-\frac{x}{10}=\frac{10x-x}{10}\to \frac{9x}{10}-noul \ pret \\\\\\ \frac{9x}{10}=35 \\\\ x=\frac{10*35}{9} \\\\ x=\frac{350}{9} \\\\ \boxed{x=38,8 \ lei}$