1 hour and 5 min. from 2:45 until 3:00 is 15 min. then from 3:00 until 3:50 is an additional 50 min. ad 15 and 50, and you get 65. every 60 min makes one hour, so that leaves you with one hour and five min.
P(G) is 26/52
P(H) is 8/52
See the rest in the photo
.0357142857 and in fraction form its 1/28