Leo reads 10 pages in 1/2 hour. what is the unit rate for pages per hour? for hours per page?

10pages/.5hour
To figure out how many pages he can read in one hour, multiply the numerator and denominator by 2. 
Leo can read twenty pages in one hour.
Hours per page is done like this
.5hour/10pages
To find out how many hours it takes to read one page, divide the top and bottom by ten.
It takes him .05 of an hour (3 minutes) to read one page.