Question

dupa doua reduceri succesive ,prima de 10 % si a doua de 20%,un joc lego costa 57,42 lei.care a fost pretul initial?

Answer 1

y *80/100 =57.42  ;    y =57.42 *100/80 =71.775
x*90/100 =71.775   ;  x =71.775*100/90 =79.75  lei pret initial