Profit: 960 * (1+20%) =1152.
Loss: 960 * (1-20%) = 768.
Total * * *:1152+768 =1820.
Price: 960+960= 1920
1920- 1820= 100
Loss 100 yuan.
Actually, I don't know much about it either. I borrowed it from other places. I wonder what this "1" stands for? It seems to be a matter of cost. In a word, the answer is right.