Respuesta :
Answer: The answer is 2 hours
Step-by-step explanation:
They are 4 parts and for one part she takes 30 minutes for 2 parts it would be a hour for 3 parts a 1 hour a half and 4 parts 2 hours.
2 hours. 1/4 is a quarter of a whole seeing as it takes 30 minutes to memorize 1/4 if you multiply 30 by 4 you will have your answer