x-pretul produsului
5% din x= 5/100*x= 1/20*x= x/20-prima scadere
x-x/20= (20x-x)/20= 19x/20-restul
6% din 19x/20= 6/100*19x/20= 3/50*19x/20=57x/1000-a doua scadere
19x/20- 57x/1000= (1900x-114x)/2000= 1756x/2000
1756x/2000=50
x=2000*50/1756
x=100 000/1756
x=56,94lei
