Sure, let's solve this step-by-step.
1. Identify the given data:
- Mike takes 18 minutes to read 4 pages of a book.
2. Determine the time it takes to read one page:
- If 4 pages take 18 minutes, we can find the time for one page by dividing the total time by the number of pages.
[tex]\[
\text{Time per page} = \frac{\text{Total time for 4 pages}}{\text{Number of pages}} = \frac{18 \text{ minutes}}{4 \text{ pages}} = 4.5 \text{ minutes per page}
\][/tex]
3. Calculate the time to read 20 pages:
- Now that we know it takes 4.5 minutes to read one page, we can find the time for 20 pages by multiplying the time per page by the number of pages.
[tex]\[
\text{Time for 20 pages} = \text{Time per page} \times \text{Number of pages} = 4.5 \text{ minutes per page} \times 20 \text{ pages} = 90 \text{ minutes}
\][/tex]
So, it takes Mike 90 minutes to finish reading 20 pages.
