Question

Triple 3 and then add double 8

Answer 1

6+6+6+8+8=31 that's the answer to your problem

Answer 2

I'd have to disagree with RedstoneKing.

Triple 3 means 3 x 3.
Double 8 means 8 x 2
Add means +
Therefore,
(3 x 3) + (8 x 2) =
9 + 16 =
25

25 is the answer, i believe!