Its just fun to test yourself, don't take it too seriously.
Teasers - Part 6
1: They at the same distance.
2: 20.
3: 4 Ostriches an 7 Giraffes.
4: 9:20.
5. 9.
6: Five Days.
7: Sleeplessness.
8: 99 99/99.
9: Mary and Jane were sitting back to back.
10: Ten times.