Final answer:
Leilah needs to study for 45 more days to finish all her flashcards.
Step-by-step explanation:
Leilah has not yet studied 600 flashcards out of her total of 2400 flashcards. She studies 40 new cards each day. To find out how many more days she needs to study to finish all the flashcards, divide the number of flashcards left by the number of new cards studied each day.
- Total flashcards left: 2400 - 600 = 1800
- Days needed to finish all flashcards: 1800 / 40 = 45
Therefore, Leilah needs to study for 45 more days to finish all her flashcards.