Answer:
Sophia's time was either 6 above or 14 below the average
Explanation:
We know two things about the time:
1. Jacob was 4 mins below average
2. Sophia was 10 minutes different than Jacob
We don't know if she was quicker or slower, however. So we can work out both.
We can take Jacob's time as -4 since he was 4 BELOW the average. If we take -4+10 this would represent if Sophia was faster than Jacob.
-4+10=6.
Now the other way. -4-10=-14.