Task: Question Answering
Input (English): Problem: the average waight of a, b, c is 45 kg. the avgwgt of a & b be 40 kg & that of b, c be 43 kg. find the wgt of b.
Options: a. 23 kg, b. 43 kg, c. 21 kg, d. 31 kg, e. 43 kg
Output (English): d