Answer:
I think it is 25 in the first box and 30 in the second box
Explanation: I knew that 20 is in the first box because of you times 10 by 2 then the answer would be 20, for the 20 you would add 5. The Second one would be 30 because if the first empty box is 25 then the next would be 30 and the last one would be 35.