[PenultimateManStanding]

$this->bbcode_second_pass_quote('Laurasia', 'A')ccording to Wikipedia, production of 25 ruble notes stopped in 1991. So my answer is that if this was a post-fall-of-the-Soviet Union question, then it IS a trick question. If it was a Soviet-era question then it is okay, and I am not smart enough to come up with the answer.

Regards,

L.

[Madpaddy]

No he lost 15 roubles in money and 10 roubles worth of hat.

look, forget about changing the money with the shopowner next door. It is a red herring and the transactions cancel each other out.

Mr Fakey Wakey gives the hat seller 25 fake roubles. For that he gets a hat and 15 real roubles in change.

Therefore the hat owner is short his 15 real roubles and a hat which cost him whatever.

[Pretorian]

the answer is 25 and the guy is dead since 1910. By the way one of his stories is probably a must read for any peakoiler ( no worries, its short)
off to look for a story

[Ayoob]

$this->bbcode_second_pass_quote('Pretorian', 't')he answer is 25 and the guy is dead since 1910. By the way one of his stories is probably a must read for any peakoiler ( no worries, its short)
off to look for a story

[Pretorian]

its very simple and was explained by posters above;
the changer doesnt gain or loose anything;
buyer walks away with a hat and 15 roubles;
therefore seller looses a hat and 15 roubles

[Pretorian]

couldnt find the story even at a free russian library too bad

[Madpaddy]

Yeah, I'm good.

[PenultimateManStanding]

$this->bbcode_second_pass_quote('purcatty', '
')simple.

[Ayoob]

$this->bbcode_second_pass_quote('Madpaddy', 'Y')eah, I'm good.