| | 3 | 7 | | 1. | | | | | | | | | | | | 20 30 | | | | 2. | | | | | 8 | 7 10 | 1 | 2 3 | 3. | | | | | 4. | | | 6% 10% | | | | | 5. | | | | | | | |