Răspunsuri

2014-08-04T14:19:58+03:00
100%+20%=120%

120%...........30 lei
100%.............. x lei
x=100x30 :120
x=3000:120
x=25
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2014-08-04T14:21:05+03:00
X-pretul initial

20% din x=20/100*x=  1/5 *x=  x/5 -scumpirea

x+x/5=(5x+x)/5=  6x/5 -noul pret

6x/5=30

x=5*30/6

x=5*5=25 lei


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