Răspuns :
85%..........561lei
100%.........x lei
x=660 lei
660 lei.....110 %
y lei..........100%
y=600lei
100%.........x lei
x=660 lei
660 lei.....110 %
y lei..........100%
y=600lei
x= pretul initial al telefonului
I :[tex] \frac{10}{100} *x[/tex]
rest I : [tex] \frac{90x}{100} [/tex]
II : [tex] \frac{15}{100} * \frac{90x}{100} = \frac{27x}{200} [/tex]
rest II :
I :[tex] \frac{10}{100} *x[/tex]
rest I : [tex] \frac{90x}{100} [/tex]
II : [tex] \frac{15}{100} * \frac{90x}{100} = \frac{27x}{200} [/tex]
rest II :