Question

daca cheltuiesc jumatate din sfertultreimeii sumeide bani pe care o am raman cu 230 lei.ce suma de bani am? (r :240lei)

Answer 1

x este suma de bani.
x-(1/2)*[(1/4)*(1/3)*x]=230
(1/2)*[(1/4)*(1/3)*x]=x-230
(1/4)*(1/3)*x=2x-460
(1/3)*x=8x-1840
x=24x-5520
23x=5520
x=240

Answer 2

x= suma initiala

$\dfrac12\cdot\dfrac14\cdot\dfrac13\cdot x+230=x$

$\dfrac{x}{24}+230=x$

$x+230\cdot24=24x$

$23x=230\cdot24$

$x=240\ lei$