Final answer:
To find the fraction of the total distance that Althea's family still needs to travel to reach Funtastic City, we add the fractions of the distances they have already traveled and subtract it from 1.
Step-by-step explanation:
To find the fraction of the total distance that Althea's family still needs to travel to reach Funtastic City, we first need to find the total distance they have traveled so far. They drove 1/4 of the way and then an additional 3/8 of the way. Adding these fractions together, we get: 1/4 + 3/8 = 2/8 + 3/8 = 5/8
To find the fraction of the total distance they still need to travel, we subtract the fraction they have traveled from 1 (since the total distance is represented by 1). So, 1 - 5/8 = 8/8 - 5/8 = 3/8
Therefore, they still need to travel 3/8 of the total distance to reach Funtastic City.