Răspuns:
1. 1%=345:100=3,45
15%=3,45x15=51,75
pretul initial= 345-51,75=293,25lei
2. 1%=320:100=3,2
20%=3,2x20=64
pretul initial= 320+64=384lei
3. 1%= 26000;100=260
30%=260x30=7800
pretul initial= 26000-7800=18200lei
4. 1%= 1800:100=18
28%=18x28=504
pretul initial= 1800+504=2304lei
