Răspuns:
x=y=7500 ; Dx=375 ; Dy=300 ; lei
Explicație pas cu pas:
x+y=15000
Dx=x*10%*1/2 ; Dx=x*10/100*1/2=x*1/20
Dy=y*16%*1/4 ; Dy=y*16/100*1/4=y*1/25
Dx=Dy*(1+25/100)=Dy*(1+1/4)=Dy*5/4 deci Dx=Dy*5/4 si inlocuim in
aceasta relatie valorile Dx si Dy functie de x si y =>
x/20=y/25*5/4 => x/20=y/20 => x=y introducand in prima relatie =>
x=y=7500 lei .
Dam valorile lui x si y in relatiile dobanzilor :
Dx=7500/20 ; Dx=375 lei
Dy=7500/25 ; Dy=300 lei