Answer:
Malika runs 1/8 of a mile more than Andrew
Explanation:
The easiest way to figure this out is by converting both of the fractions to have the same denominator. Do not convert them to decimals because the answer might not always turn out to be right.
If we keep Andrew's distance of 5/8 the same we can easily convert Malika's distance of 3/4 to the same denominator by multiplying it by two

Now that the denominators are the same, we are able to subtract the fractions.

Malika runs 1/8 of a mile more than Andrew