Based on the given information, we can use deductive reasoning to determine each person's jersey number and race time. Let's analyze the clues one by one:
1. The runner with the lowest jersey number also ran the slowest time.
From this clue, we can deduce that the runner with the jersey number 2 ran for 14 minutes, as it is the slowest time.
2. Nick's jersey number is 18 greater than Carmen's.
Since Nick's number is greater than Carmen's and there is a difference of 18, we can conclude that Nick's jersey number must be 34, and Carmen's jersey number is 16.
3. Of the four runners, a man had the fastest finishing time.
This clue implies that Beki is not the one with the fastest time. So, Joey must have the fastest finishing time.
4. The sum of the digits on Beki's jersey number is 7.
The only number among the remaining options (13 and 20) that has a sum of digits equal to 7 is 20.
Now, let's summarize our deductions:
Nick: Jersey number 34, Time 12 minutes
Joey: Jersey number [Remaining], Time [Remaining]
Beki: Jersey number 20, Time [Remaining]
Carmen: Jersey number 16, Time [Remaining]
Since we know that Nick finished exactly 2 minutes faster than Beki, we can deduce that Beki's time must be 14 minutes.
Now, let's fill in the remaining information:
Nick: Jersey number 34, Time 12 minutes
Joey: Jersey number 13, Time [Remaining]
Beki: Jersey number 20, Time 14 minutes
Carmen: Jersey number 16, Time [Remaining]
Given that each person has a different time, we can conclude that Joey must have taken 10 minutes, leaving Carmen with 11 minutes.
Final Summary:
Nick: Jersey number 34, Time 12 minutes
Joey: Jersey number 13, Time 10 minutes
Beki: Jersey number 20, Time 14 minutes
Carmen: Jersey number 16, Time 11 minutes
Therefore, each person's jersey number and race time are as follows:
Nick: Jersey number 34, Time 12 minutes
Joey: Jersey number 13, Time 10 minutes
Beki: Jersey number 20, Time 14 minutes
Carmen: Jersey number 16, Time 11 minutes.