Subtract the boarding time from the alighting time to find the trip duration.<br><br>
&bull; Alighted: 13.35 (1.35 p.m.)<br>
&bull; Boarded: 13.15 (1.15 p.m.)<br>
&bull; Duration = 13.35 − 13.15 = 20 minutes<br><br>
Final Answer: 20 minutes