Răspuns :
x-pretul initial
x-10x/100=396 / ori 100
100x-10x=36900
90x=36900
x=440 lei pretul inainte de reducere
x-10x/100=396 / ori 100
100x-10x=36900
90x=36900
x=440 lei pretul inainte de reducere
Fie x pretul.Dupa reducere costa 90% x
90/100x=396
x=396:(90/100)=396*100:90=44*10=440 lei
90/100x=396
x=396:(90/100)=396*100:90=44*10=440 lei