新东方蓝皮书数学求解

liuruanjia

There were 36.000 hardback copies of acertain novel sold before the paperback version was issued. From the time the first paperback copy was sold until the last copy of the novel was sold. 9 times as many paperback copies as hardback copies were sold. If a total of 441.000 copies of the novel were sold in all, how many paperback copies were sold?答案是364500，我意思都感觉没太清楚，能简单解释下吗

doujiangwanzi

From the time the first paperback copy was sold until the last copy of the novel was sold. 9 times as many paperback copies as hardback copies were sold. -> P=9H
If a total of 441.000 copies of the novel were sold in all -> P+H+36000 = 441000

liuruanjia

谢了，9 times as many paperback copies as hardback copies were sold-->=9H，我老是这里理解反了