Question

Dupa o reducere de 10% un produs costa 135 lei ! Aflati produsul initial

Answer 1

100%-10%=90%
90%.....................135lei
100%.....................xlei
x=100*135/90=13500/90=150
Pretul initial a fost:150 de lei.

Answer 2

$Notez~cu~x~pretul~initial. \\ \\ Daca~pretul~s-a~redus~cu~10\%,~inseamna~ca~a~ramas~90\%~din~el. \\ \\ \frac{90}{100}*x=135=\ \textgreater \ x= \frac{135*100}{90}\ \textless \ =\ \textgreater \ \boxed{x=150(lei)} . \\ \\ Pretul~initial~al~produsului~este~150~lei.$