What does- Cuantas clases tienes los martes mean?

"Cuantas clases tienes los martes" translates to "How many classes do you have on Tuesdays?" in English.

Let me break it down:

* Cuantas: How many

* Clases: Classes

* Tienes: Do you have (verb "tener" conjugated for "you")

* Los: The (plural masculine)

* Martes: Tuesdays

It's a common question to ask about someone's schedule!