43 11880
- ×3960 = -------- =1485 (lei hrana)
8 8
1 3960
- ×3960= --------- = 990 (lei chirie)
4 4
1 3960
- ×3960 = -------- = 660 (lei imbracaminte)
6 6
1 3960
- ×3960 = ------- = 495 (lei utilitati)
8 8
1485+990+660+495=2475+1155=3630
3960 - 3630=330 (lei economii)