👤

Dupa o reducere cu 20% o carte costa 96 de lei.Determinati pretul cartii inainte de reducere

Răspuns :

x- pretul cartii dinainte de reducere
x-20/100x(reducerea)=96
x(1-20/100)=96
80/100x=96
x=96x10/8
x=120 lei
not:x-pret initial
100/100x-20/100x=96
80x/100=96
80x=9600
x=9600:80
x=120 lei