The number of hours it takes Elisabeth to read 3/4 of the book is; 5³/₅ hours
<h3>What are mixed numbers?</h3>
We are told that she reads 15 of her books in 112 hours.
Thus, number of hours to read one book is;
112/15 hours per book
Therefore, number of hours to read ³/₄ of the book is;
³/₄ * ¹¹²/₁₅ = 28/5
As a mixed number is 5³/₅ hours per book
Read more on mixed numbers at; brainly.com/question/10225
