Solution to Moriarty’s Marvellous Moustache Mixture Scam

 
 
Good morning my dear pupils.
As you can see Professor Moriarty is also a  trickster.  He was probably scarce of funds!
The answer to this problem is easy, specially if you use your knowledge on divisibility. Some of you found it.
You have to look for a divisor of 3895 greater than 50 and smaller than 100. You can factorice he number [...]

Solution to The Dark Dungeon Problem

Good morning my dear pupils.
Why are you so lazy/shy? Why don’t write more posts?
M. B. gave me the solution. You are clever, write on the blog!
The answer is 21 hours. The reasonament is simple. Holmes made 16 candles from 64. When they burnt down he had 16 candle subs and he made from then 4 candles. [...]