Answer:
49 min
Explanation:
You have to subtract the time she finished swimming from the time she started
But first, we have to convert the given time into minutes (1h has 60 min):
3:22 h = 3h × 60 min + 22 min = 202 min
4:11 h = 4h × 60 min + 11 min = 251 min
251 min - 202 min = 49 min