Task: Question Answering
Input (English): Problem: there are 2 sections a and b in a class, consisting of 50 and 50 students respectively. if the average weight of section a is 60 kg and that of section b is 80 kg, find the average of the whole class ?
Options: a. 50.78 kg, b. 49.32 kg, c. 61.67 kg, d. 70 kg, e. 70.89 kg
Output (English): d