Question

dupa o reducere cu 20% o carte costa 96 lei determinati pretul cartii pina la reducere

Answer 1

$\frac{100}{100} - \frac{20}{100} = \frac{80}{100} \\ \frac{80}{100} x=96 \\ 80x=96*100 \\ x=9600:80 \\ x=120 lei.pretul.initial$