Question

Dupa o reducere de 6% si alta de 5% un produs costa 178,6 lei. Aflati pretul initial .
 E  URGENT  ...   VA ROG !

Answer 1

x-pretul initial
% din x= 6/100 *x= 3/50 *x= 3x/50 -prima reducere
x-3x/50 =(50x-3x)/50=  47x/50 -noul pret
5% din 47x/50= 5/100 *47x/50=  1/20 * 47x/50= 47x/1000 -a doua reducere
47x/50-47x/1000= (940x-47x)/1000=  893x/1000-noul nou pret
893x/1000=178,6
x=1000*178,6/893
x=178600/893
x=200