If the train left at 7:59 and Josh was a hundred minutes late how late would Josh be?i have a simaler question

Add 100 to 7:59, giving us 7:159.

159/60 = 2.65.
.65/60 = 39 minutes

Josh arrived at 9:39

Another way of solving this problem is to figure that 100 minutes is 20 minutes short of 2 hours. Two hours later would be 9:59. 9:59 - :20 = 9:39.