Respuesta :
If she left at 2:40 and stayed for 1 hour and 35 minutes (1:35) then you just have to do 2:40-1:35 and you get your answer which is 1:05. So, she arrived at 1:05. To check your work just do inverse operations: 1:05+1:35=2:40.
Hope I helped!
Hope I helped!