Final answer:
To compare the distances that Harry and Karen rode, convert their fractions to have a common denominator and then compare them.
Step-by-step explanation:
To compare the distances that Harry and Karen rode, we need to find a common denominator for their fractions. The least common denominator of 8 and 5 is 40. So, let's convert both fractions to have a denominator of 40.
Harry rode 25 3/8 miles, which is equivalent to 25 15/40 miles. Karen rode 25 2/5 miles, which is equivalent to 25 16/40 miles.
Now, we can see that Karen rode farther because 25 16/40 miles is greater than 25 15/40 miles.