答案解析
通过解以下的方程来得到要求的本数 X等于本数 总销售额–总变动成本– 固定成本= (回报%)(总销售) 总销售= $45x 固定成本= 开发+ 排版+ 折旧+管理费用+其他固定成本= $35,000 + $18,500 + $9,320 + $7,500 + $4,400 = $74,720 总变动成本 = (单位变动成本或CU)(x) = VCU(x) VCU = (打印和装订+销售人员佣金+ 书店佣金+作者版税) / (本数)= ($30,000 + $5,400 + $67,500 + $27,000) / (6,000本) = $129,900 / 6,000= $21.65/本 $45x – $21.65(x) – $74,720 = (0.2)($45x) $45x – $21.65(x) - $74,720 = $9x $23.35(x) - $74,720 = $9x $14.35x = $74,720 x = 5,206.97,大约是5,207本