Final answer:
'Hay tantos alumnos como profesores' is a correct comparative sentence in Spanish that means 'There are as many students as teachers'.
Step-by-step explanation:
'Hay tantos alumnos como profesores' is a correct sentence.
The sentence translates to 'There are as many students as teachers' in English. It is a comparative sentence that uses the adverb 'tan' (as) to compare the number of students and teachers. The structure 'tan + adjective/adverb + como' (as + adjective/adverb + as) is used to express equality or similarity.
For example, you can use this structure to say 'Ella es tan alta como él' (She is as tall as him) or 'Corro tan rápido como tú' (I run as fast as you).
Learn more about Comparative sentence in Spanish