Answer:
It will take 15 hours to read a book with 180 pages
Step-by-step explanation:
First, let's set up a ratio to find how many pages she reads per hour:
36:3 = 12:1
Now we can set up fractions to solve:
[tex]\frac{12}{1} =\frac{180}{x}[/tex]
Cross multiply:
[tex]12x=180[/tex]
Divide each side by 12:
[tex]x=15[/tex]
