Más de treinta personas respondieron la encuesta.

Questions & Answers about Más de treinta personas respondieron la encuesta.

Why do we use más de instead of más que in this sentence?
Because we are talking about a specific number (treinta). In Spanish, when 'more than' or 'less than' is followed by a number, you must use más de or menos de. You use más que when comparing things, qualities, or actions (for example: él corre más que yo - he runs more than me).
I thought 'to answer' required an a, like responder a. Why is it missing before la encuesta?
Responder can be used directly without a preposition when you are answering a thing, like a question, a test, or a survey (la encuesta). However, adding the a is also completely correct here, so respondieron a la encuesta means the exact same thing. Just remember that if you are answering a person, you always need the personal a (like respondieron a María).
Could I use the verb contestar instead of responder here?
Yes, absolutely! Contestar and responder both mean 'to answer' and are completely interchangeable in this context. Saying contestaron la encuesta would be perfectly natural.

Learn Más de treinta personas respondieron la encuesta and more in Spanish

All course content and exercises are completely free — no paywalls, no trial periods, no signup needed.

  • Practice with interactive exercises
  • Track your progress with spaced repetition
  • Learn at your own pace — completely free