Question

Sumaya is reading a book with 288 pages. She has already read 90 pages. She plans on reading 20 more pages each day until she finishes the book. Estimate how many days you would need to read a book about the same length as Sumaya's book. What information did you use to find the estimate?

a) 11 days; the total number of pages
b) 13 days; the rate of reading per day
c) 12 days; the rate of reading per day
d) 15 days; the total number of pages left

Answer 1

Sumaya would need an estimated 11 days to finish reading a 288-page book, given she has already read 90 pages and plans to read 20 pages per day. This estimate uses the total number of pages left and the daily reading rate to calculate the time needed.

Step-by-step explanation:

To estimate how many days Sumaya will need to read a book with 288 pages, if she has already read 90 pages and plans to read 20 more pages each day until she finishes the book, we will use the following calculations:

1. First, we find the total number of pages left to read by subtracting the number of pages already read from the total page count: 288 - 90 = 198 pages remaining.
2. Next, we divide the number of pages remaining by the rate at which Sumaya plans to read per day: 198 pages ÷ 20 pages/day = 9.9 days.
3. Since we cannot have a fraction of a day, we round up to the nearest whole number, which gives us 10 days.

Including the day she is currently on, that would result in 10 + 1 = 11 days to finish the book.

Therefore, the correct answer is option a) 11 days; the total number of pages and the rate of reading per day were used to find the estimate.