1.90%......99lei
100%.......xlei
⇒[tex]x=\frac{100*99}{90} =110lei[/tex]
2. 120%.........120lei
100%.........xlei
x=[tex]\frac{100*120}{120} =100lei[/tex]
3.110%.......198lei
100%........xlei
x=[tex]\frac{100*198}{110} =180[/tex]
Acelelalte sunt fixe asa ca modelul3.