Question

Aflati ce suma de bani avea o peraoana stiind ca dupa ce a cheltuit 10 lei si inca 40% din rest, i-a mai ramas jumatate din suma initiala.

Answer 1

x=suma
10 lei= 1 cheltuiala
(x-10) *40%=40x/100-40*10/100=2x/5-4= a 2-a cheltuiala
10+2x/5-4=x/2
6+2x/5=x/2
60+4x=5x
x=60 lei