Puzzles of Joy!

We were given a question in a lecture today. It wasn't actually the focus of the lecture (it was being used to demonstrate a theory of problem-solving) but I solved it! This is very exciting because I am most commonly rubbish at this kind of puzzle...

There are 3 containers. Container A has a capacity of 8 litres, B has a capacity of 5 litres and C a capacity of 4 litres. Container A is filled with water. How do you pour the water to finish with 4 litres in A and 4 litres in B?

	A	B	C
	8L	0L	0L
1) Pour 5L from A->B	4L	5L	0L
2) Pour 3L from B->C	3L	2L	3L
3) Pour 3L from C->A	6L	2L	0L
4) Pour 2L from B->C	6L	0L	2L
4) Pour 5L from A->B	1L	5L	2L
4) Pour 1L from B->C	1L	4L	3L
4) Pour 3L from C->A	4L	4L	2L

Apparently Alan did in 6 steps but perhaps that's a puzzle for another day.