Task: Question Answering
Input (English): Question: A trained covered x km at 30 kmph and another 2x km at 20 kmph. Find the average speed of the train in covering the entire 3x km.

 Option A: 20kmph

 Option B: 22.5kmph

 Option C: 25kmph

 Option D: 30kmph

 Option E: 35kmph
Output (English): Option B