Spanish phrase
¿Cuánto tardan ~?
Meaning
How long do ___ take?
When to use it
Asks how much time a plural subject requires. Used to check travel or service durations, neutral polite tone.
Example dialogue
¿Cuánto tardan en llegar los autobuses?
How long do the buses take to arrive?
Depende de la línea, suelen tardar unos veinte minutos.
It depends on the line; they usually take about twenty minutes.