Answer:
B ) 28 cause it’s u add 21 with 7
1/5
1/10 / 1/2= 2/10
Then simplify it by 2, it becomes D.1/5
5 1/2 pages in 12 minutes.
11/2 pages in 12 minutes
How many pages in an hour?
well, an hour has 60 minutes
Let's write a proportion
11/2 / 12 = x/60
cross multiply
(11/2 * 60) = 12x
330 = 12x
divide both sides by 12
27.5 or 27 1/2 = x
27.5 pages per hour.
Hope this helps