Răspunsuri

2014-07-13T11:56:15+03:00
X-pretul initial

20% din x=  20/100*x= 2/10 *x= 1/5 *x=  x/5-ieftinirea

x-x/5= (5x-x)/5=  4x/5-restul

20% din 4x/5=  20/100* 4x/5=  2/10*4x/5=  1/5 *4x/5=  4x/25 -majorarea

4x/5 +4x/25=  (20x+4x)/25=  24x/25 -noul pret

24x/25=288

x=25*288/24

x=25*12
x=300 lei

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