Hi, I would value anyone's point of view about this market sizing question. Just so you do not get shocked on how useless I am, I have no Case Interview experience whatsoever;) I work at an international bank within the M&A division, and never got asked these when going through recruiting (luckily for me)
So the other day I was asked, during an interview with a Fintech, to calculate the number of coins that are thrown each year to the Trevi Fountain (in Rome).
So I think the easiest way possible (it seems my answer was far from being right since I was rejected;))---> number of annual tourist x coins per tourist + number of romans x coins per roman
I segmented the number of tourists by season (assuming summer brings more tourists) and made up the numbers for each season.
To calculate the number of thrown coins per tourist/roman I divided between high income, medium income and low income, assuming tourists had a higher proportion of high income people.
Again, I completely made up the number of coins per each income segment.
The outcome of the interview, even though my interviewer told me the reasoning was ok, was me being rejected...
I don't really care that much about that specific interview since that company didn't attracted me so much, but I realle need to know how you guys would have solved that question if given the chance.
As I said, any comment, point of view, help would be more than appreciated, really.
Thank you in advance,
The other day I was asked during an int