1/4
1) Gathering the data
Saturday: 5/8
Sunday: 2/3
2) Since the distance traveled on Sunday, was 2/3
Let's sketch that:
Since Hector's family traveled on Sunday 2/3 of that remaining 3/8 then they traveled 1/4 of the whole trip on Sunday.
2/3x 3/8 =6/24 = 1/4