Answer:
They finish at 2:15.
Explanation:
One hour equals 60 minutes, and on clocks, they go up to 59 minutes on the right side.
So, if we add 60 to the 15 on the minute side, we get 1:75, this leaves the 15 minutes remaining, and adds one to the left side, leaving us with 2:15.
Let me know if there are any questions, I tried my best to explain!