【Mamiifun】評論
https://tw.answers.yahoo.com/question/index?qid=20141202000015KK04867
【Hsing-Hsiu Hu】評論
設P=a -bQ35=a-100bMR=a-2bQ=MC , 15=a-200b聯立 a=55 b=0.2 P=55+0.2QCS= (55-35)*100 / 2 = 1000