Its just fun to test yourself, don't take it too seriously.
Teasers - Part 3
1: 20 miles
2: 1,2,3
3: 6 hours because he makes another from the stubs.
4: Half way
5: It's 80 minutes both ways.
6: One person gets in the basket with the apple.
7: One big Haystack.
8: Albert=Doctor, Broker=Aloysius, Alexander=MP, Alfred=Lawyer.