Răspuns :
100 % - 25% = 75%
Fie x pretul initial
75% x = 75
75 x /100 = 75
3x/4 = 75
x/4 = 25
x= 25 x 4 = 100 lei a costat produsul
Fie x pretul initial
75% x = 75
75 x /100 = 75
3x/4 = 75
x/4 = 25
x= 25 x 4 = 100 lei a costat produsul
o alta metoda 75%....................75lei
100%....................xlei
=============================
x=100×75÷75=100lei
100%....................xlei
=============================
x=100×75÷75=100lei