((3 hours)+(48 minutes)-(48 seconds))-((3 hours)+(15 minutes)-(40 seconds)) . . .32 minutes 52 seconds
The time duration is 42 - 16 = 26 minutes P L U S 20 + 48 = 68 seconds = 1 minute and 8 seconds, which is 27 minutes and 8 seconds, in total ANSWER