1.328 lei __________100%
x_______________19%
x=328·19/100=62,32 lei valoarea TVA
2.3240 lei ___________ 100%
3000 lei ___________ x
x=3000·100/3240=92,5%
=>p=7,5%
3.Fie x-suma depusa la banca
x+x/100-suma cu dobanda lunara de 1%
x/100-dobanda lunara
x/100·12=240
12x/100=240
12x=24000
=>x=2000 lei