Răspunsuri

2014-07-12T16:29:02+03:00
X-pretul initial

10% din x= 10/100 * x=  1/10 * x=  x/10 -scumpirea

x+x/10=  (10x+x)/10=   11x/10-noul pret

11x/10=2200

x=10*2200/11

x=10*200

x=2000 lei
2014-07-12T16:33:28+03:00
100%+10%=110%
110%.........2200
100%...............x
_________________
x=  \frac{100X2200}{110} = \frac{220000}{110} =2000
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