Answer:
56 pages per hour
Explanation:
Penny reads 14 pages in 1/4 of an hour.
An hour is 4 times more than 1/4 of an hour (you could think of it as 15 minutes compared to 60 minutes)
Multiply the amount penny reads in 1/4 of an hour (14 pages) by 4 to get the rate she reads in 1 hour.
14 x 4 = 56
Now add the rate of time (per hour) to get that she reads a total of 56 pages per hour.
Hope this helps!