Answer:
30 pages per hour
Explanation:
Angelo reads 1&1/2 pages in 3 minutes.

3/2 pages read in 3 minutes, we need to find the pages read in 1 hour
we know that 1 hour = 60 minutes
In 3 minutes pages read = 3/2
To find out reading speed, we divide number of pages by minutes
Reading speed per minute=

So his reading speed in pages per hour is

30 pages per hour