Question

Dupa doua reduceri consecutive de preturi , prima de 15% , iar a doua de 20, un obiect costa 34 lei. Aflati pretu initial al produsului !
Va rog ajutati-ma !

Answer 1

x+15%+20%=x+3/20+1/5=20X+3+4=34
20x=27
x=0.74

Answer 2

(x-15/100x)-20/100(x-15/100x)=34
(x-15/100x)(1-20/100)=34
x(1-15/100)(1-20/100)=34
x=34/(1-15/100)(1-20/100)
x=34/0.85*0.8
x=50 lei