How many hint coins in town in Professor Layton and Pandora's Box?

Well, you get a hamster from the cook on the train, and you get toys for him to play with by solving puzzles. Toaccess them, you open the professor's trunk and press hamster. There you can set out a course and you've got to try and get your hamster, (whatever you want to call it) to walk as many steps as possible so that it can get as slim as possible. When it gets skinny, it will say that your hamster will now sniff out hint coins for you.