Tina's swimming lesson started at 5:30 P.M. and ended at 6:25 P.M. How long did the swimming lesson last?

6:00 P.M = 5:30 P.M + 30 min

6:25 P.M = = 6:00 P.M + 25 min

30 min + 25 min = 55 min

To determine the duration of Tina's swimming lesson, subtract the starting time from the ending time:

6:25 P.M. - 5:30 P.M.

To subtract the minutes, since 25 is greater than 30, we need to borrow an hour from the 6 in the hour place:

6:25 P.M. becomes 5:85 P.M.

Now we can subtract the minutes:

85 minutes - 30 minutes = 55 minutes

The swimming lesson lasted 55 minutes.

To find out how long Tina's swimming lesson lasted, we need to subtract the starting time from the ending time.

Given that the swimming lesson started at 5:30 P.M. and ended at 6:25 P.M., we can convert these times into a 24-hour format for easier calculation.

5:30 P.M. is equivalent to 17:30 in the 24-hour format, and 6:25 P.M. is equivalent to 18:25.

To calculate the duration, we subtract the starting time (17:30) from the ending time (18:25):

18:25 - 17:30 = 0:55

The swimming lesson lasted for 55 minutes.