The number of pages of the book that David would be able to read in 80 minutes is 64 pages.
How many pages can he read in 80 minutes?
The first step is to determine the number of pages he can read in 1 minutes.
40/50 = 0.80 pages
Now multiply the unit rate by 80 minutes.
80 x 0.8 = 64 pages
To learn more about multiplication, please check: https://brainly.com/question/13814687
