Răspuns :
x- pretul initial
x+10%*x=55lei
[tex] \frac{110}{100} x=55 [/tex]
x=[tex] \frac{55*100}{110} = \frac{5*100}{10} =50[/tex]
x+10%*x=55lei
[tex] \frac{110}{100} x=55 [/tex]
x=[tex] \frac{55*100}{110} = \frac{5*100}{10} =50[/tex]