Firstly I assume that the Transition ALTITUDE is 3,000 ft amsl.
The best way of thinking about this is to imagine you climb to 3,000 ft on QNH 1015 and then parked the aeroplane on a convenient hill at this point. You get out of the aircraft and then reach inside and set 1013 mb. You are winding off 2 mb so that means you and winding off 60 ft. (So the Alt now reads 2940 ft) - You now get back inside the a/c and climb to the next available Flight Level - in this case FL 30. As your magnetic track is in the first quadrant an odd level is appropriate - therefore you may fly at FL 30.
So assuming there are no other stipulations in the question (like a minimum safe altitude for terrain clearance) then I believe your answer of FL 30 is correct.
Hope this helps.