If you would like to find the elapsed time between 11:50 a.m. and 4:05 p.m., you can calculate this using the following steps:
12:00 p.m. - 11:50 a.m. = 0:10
12:00 p.m. + 4:05 p.m. = 4:05
0:10 + 4:05 = 4:15 = 4 hours and 15 minutes
The correct result would be 4 hours and 15 minutes.