Jumping in Puddles

Answer: Tuesday Teaser #16

Tricky one to explain this one, you may need a pen and paper to cumulate the totals. So we start with two 8-litre jugs, let’s call them A and B, and an empty 3-litre jug, let’s call that C.

1. 3 litres A => C => Pool 1
2. 3 litres A => C
3. 2 litres A => Pool 2
4. 3 litres C => A
5. 3 litres B => C => A
6. 3 litres B => C
7. 2 litres C => A
8. 1 litre C => Pool 3
9. 2 litres B => C
10. 1 litre A => C
11. 3 litres C => B
12. 3 litres A => C => B
13. 3 litres A => C
14. 1 litre A => Pool 4
15. 2 litres C => B
16. 1 litre C => Pool 1 (which now has 4 litres in it)
17. 3 litres B => C => Pool 3 (which now has 4 litres in it)
18. 3 litres B => C => Pool 4 (which now has 4 litres in it)
19. 2 litres B => Pool 2 (which now has 4 litres in it)

Done!