Final answer:
Alexis read 6 short stories per hour.
Step-by-step explanation:
To find out how many short stories Alexis read per hour, we need to convert the time from minutes to hours. Since there are 60 minutes in an hour, we can divide 5 minutes by 60 to get the fraction of an hour.
5 minutes / 60 minutes = 1/12 hour.
Now, we can divide the fraction of a short story Alexis read in 1/2 hour by the fraction of an hour we calculated:
1/2 short story / 1/12 hour = 1/2 * 12/1 = 6 short stories.
Therefore, Alexis read 6 short stories per hour.