Răspunsuri

2014-04-28T13:29:52+03:00
Fie  x = pretul initial

dupa prima scumpire avem : x+  \frac{10}{100} *x =  \frac{11x}{10}

dupa a doua scumpire avem :  \frac{11x}{10}  \frac{10}{100} * \frac{11x}{10}  ⇒ ·
 
 \frac{110x + 11x}{100} = 605

 \frac{x(110+11)}{100} = 605

⇒x =  \frac{60500}{121}

⇒x = 500 pretul initial