Take into account that the ARS/USD currency exchange can vary abruptly. Nowadays, it around $30-$40... so, 60k ARS is going to be 20k USD (... or less).
Buenos Aires is expensive. It is at the same level than London or Paris. I'm living in Spain, and I can say that Buenos Aires is more expensive than Madrid.
So, for that salary level, I think you are going to be taxed with the basic 11%. Additionally, take into account that many industries frequently pay immigrants under the table.