Answer:
she finishes music at 9:05 and finishes painting at 9:25.
Step-by-step explanation:
If you add 35 minutes to 8:30 you get 9:05 and that's when her music lesson is over so you would add 20 minutes to 9:05 and you would get 9:25 which is when she finishes painting.
Hope it helps! :)