Explanation:
range : 6.5 to 23.5 thousand miles.
= 23.5 - 6.5 = 17 thousand miles.
maximum : 23.5 thousand miles
25% of the data is above 16.4 thousand miles.
75% of the data is above 8.6 thousand miles.
and therefore, 75% of the data is between 8.6 and 23.5 thousand miles.