Verified Answer :

Step One: 150 Pages ÷ 15 Pages = 10
Step Two: 10 × 2 = 20 Hours

Answer: Amanda read the book in 20 hours.

Answer: 20 hours

Step-by-step explanation:

Given: The number of hours taken by Amanda to read 15 pages = 2 hours

Using unitary method, the number of hours taken by Amanda to read 1 page =\(\dfrac{2}{15}\) hour

Now, the number of hours taken by Amanda to read 150 pages =\(\dfrac{2}{15}\times150=20\) hours.

Hence, she takes 20 hours to read the entire book .