| Pan P. Wielicki | ||
| Data | Wpłaty (+)Wypłaty(–) | Stan konta |
| 1.05 | +500 | 500 |
| 7.05 | –700 | –200 |
| 8.05 | +200 | 0 |
| 12.05 | –250 | –250 |
| 15.05 | –100 | –350 |
| 21.05 | +350 | 0 |
| 31.05 | +150 | 150 |
| Pan M. Karwowski | ||
| Data | Wpłaty (+)Wypłaty(–) | Stan konta |
| 1.05 | +700 | 700 |
| 2.05 | –820 | –120 |
| 10.05 | –300 | –420 |
| 15.05 | +350 | –70 |
| 17.05 | +110 | 40 |
| 21.05 | –130 | –90 |
| 30.05 | –200 | –290 |
| Pan P. Wielicki | ||
| Data | Wpłaty (+)Wypłaty(–) | Stan konta |
| 1.05 | +500 | 0 + 500 = 500 |
| 7.05 | –700 | 500 – 700 = –200 |
| 8.05 | +200 | –200 + 200 = 0 |
| 12.05 | –250 | 0 – 250 = –250 |
| 15.05 | –100 | –250 – 100 = –350 |
| 21.05 | +350 | –350 + 350 = 0 |
| 31.05 | +150 | 0 + 150 = 150 |
| Pan M. Karwowski | ||
| Data | Wpłaty (+)Wypłaty(–) | Stan konta |
| 1.05 | +700 | 0 + 700 = 700 |
| 2.05 | –820 | 700 – 820 = –120 |
| 10.05 | –300 | –120 – 300 = –420 |
| 15.05 | +350 | –420 + 350 = –70 |
| 17.05 | +110 | –70 + 110 = 40 |
| 21.05 | –130 | 40 – 130 = –90 |
| 30.05 | –200 | –90 –200 = –290 |