Question
Lisa took 12 hours to read a 360-page book. At this rate, how long will it take her to read a 400-page book?
13 hours and 20 minutes
12 hours and 15 minutes
15 hours 25 minutes
14 hours 10 minutes
13 hours and 20 minutes
12 hours and 15 minutes
15 hours 25 minutes
14 hours 10 minutes
Answers
GPT-4o mini
To find out how long it will take Lisa to read a 400-page book based on her reading speed from a 360-page book, we first need to determine her reading rate.
Lisa took 12 hours to read a 360-page book, so her reading rate is calculated as follows:
\[
\text{Reading Rate} = \frac{\text{Total Pages}}{\text{Total Time}} = \frac{360 \text{ pages}}{12 \text{ hours}} = 30 \text{ pages per hour}
\]
Next, we need to calculate how long it will take her to read a 400-page book using the same reading rate:
\[
\text{Time} = \frac{\text{Total Pages}}{\text{Reading Rate}} = \frac{400 \text{ pages}}{30 \text{ pages per hour}} \approx 13.33 \text{ hours}
\]
Now, we convert 0.33 hours into minutes. Since there are 60 minutes in an hour:
\[
0.33 \text{ hours} \times 60 \text{ minutes/hour} \approx 20 \text{ minutes}
\]
Thus, it will take her approximately 13 hours and 20 minutes to read the 400-page book.
The answer is **13 hours and 20 minutes**.
Lisa took 12 hours to read a 360-page book, so her reading rate is calculated as follows:
\[
\text{Reading Rate} = \frac{\text{Total Pages}}{\text{Total Time}} = \frac{360 \text{ pages}}{12 \text{ hours}} = 30 \text{ pages per hour}
\]
Next, we need to calculate how long it will take her to read a 400-page book using the same reading rate:
\[
\text{Time} = \frac{\text{Total Pages}}{\text{Reading Rate}} = \frac{400 \text{ pages}}{30 \text{ pages per hour}} \approx 13.33 \text{ hours}
\]
Now, we convert 0.33 hours into minutes. Since there are 60 minutes in an hour:
\[
0.33 \text{ hours} \times 60 \text{ minutes/hour} \approx 20 \text{ minutes}
\]
Thus, it will take her approximately 13 hours and 20 minutes to read the 400-page book.
The answer is **13 hours and 20 minutes**.