if i found an amount of money then i will try to find the owner .I know it would be difficult to find the owner because offcourse no owner name will be written on money . So the other thing i can do with that money is i will give that money to the poor people may be that money can be the breakfast/lunch/dinner for beggar :)

If the owner is obvious, I will give him back. If not, I keep it

To be honest, I'd probably consider it a blessing :)

The original question should ask "What <em>would</em> you do if you found an amount of money?"  (or, "what would you do if you found a certain amount of money")

To be honest, I <em>would</em>....

I was in this type of situation many times.Actually,at first,i felt really confuse but i saw that if i didn't give it back to the owner,i would have a feeling guilty.Therefore,i decided to turn that money which made me quite happy.

LiLYA, with my all respect i think that it is kind of myth and it is far from reality, my grandmother telled me stories like that when i was so young in order to teach me not to take other's things when i find it. 

These stories have only moral ideas but they are not true