To determine if Ruben and Claire are running at the same rate, we can calculate their average daily running distances.
Ruben runs 16 miles over 4 days:
- Average distance per day for Ruben = 16 miles / 4 days = 4 miles per day.
Claire runs 12 miles over 3 days:
- Average distance per day for Claire = 12 miles / 3 days = 4 miles per day.
Since both are running 4 miles per day, they are running at the same rate.
So, the answer is "1".