Learn Romanian: El are o problemă la primărie. - He has a problem at the city hall.

problemă is a feminine noun, which you can often guess because it ends in -ă. Because it is feminine, it uses the feminine word for a/an, which is o. If it were a masculine or neuter noun, you would use un.

The translation says "at the city hall", but I don't see a word for "the" attached to primărie. Why is that?

In Romanian, nouns usually drop their definite article ("the") when they come directly after simple prepositions like la (at/to), în (in), or pe (on). So you just say la primărie instead of attaching a "the" ending to the word.

Can la mean both "at" and "to"?

Yes! la is a very flexible preposition. Here it means "at" because it shows where the problem is located. If you were using a verb of motion, like walking or driving somewhere, la primărie would mean "to the city hall".

Is the word primărie related to the word primar (mayor)?

Yes, they are directly related. primar means "mayor", and a primărie is the mayor's office or city hall. Romanian often creates words for places or institutions by adding -ie to the end of a title or profession.