QuestionLydia is reading a 400 page book. She reads the first 40 pages in 4 days.
If Lydia continues to read at the same rate, how long will it take her to finish the book? Solve on scrap paper first if you need to. It will take Lydia $\square$ days to finish the book.

Studdy Solution
Calculate the total time needed to read the entire book using her reading rate.
Since the book has 400 pages and Lydia reads at a rate of 10 pages per day, we find the total number of days required:
$$\text{Total days} = \frac{400 \text{ pages}}{10 \text{ pages per day}} = 40 \text{ days}$$
It will take Lydia $\boxed{40}$ days to finish the book.