Question

dupa o scumpire cu 10% pretul unui produs este de 2200lei. calculati pretul inital inainte de scumpire.

Answer 1

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

Answer 2

100%+10%=110%
110%.........2200
100%...............x
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x= $\frac{100X2200}{110} = \frac{220000}{110} =2000$