Adding 3 Odd numbers will result to another Odd, and hence making it 30 is not possible using numbers for once. However, it may appear like this= (9/3)+(15/3)+(17+5)
As everyone says, it is not possible to get even number by adding 3 Odd numbers. However, by reversing 9 to 6, it is possible.
combination would be 11+6+13 ...
my answer may be silly...but that was the only option i think of...