Answer:
7:45 is when Aiko started jumping rope.
Explanation:
If you start with 8:05 then subtract the 5 minutes you only have 15 minutes to calculate. Then you do 60 - 15 because there are 60 minutes in one hour. If you do that you are left with 45 and the hour would be 7 so the answer is 7:45
I know this is a bit late but hopefully it can help others, have a great day!