[原创]04年5月mathJJ讨论稿第6篇(154--173)

juniya

164 PS:Feb =0.85 original price May=1.1Feb 问 May 比原价？
    Key: Less 9.9%
horsefish:May=1.1*0.85 original=0.935 original

(x-0.935x)   /  x  = 6.5%

juniya

167 PS: 买进10个单价150，买出4个单价225，5个单价P，留一个不买，问要PROFIT 375,P 多少
horsefish:170

To horsefish mm,  I don't understand, tell me how to figure it out?

Thanks!!!!

[此贴子已经被作者于2004-5-26 3:27:00编辑过]

juniya

辛勤的horsefish!!!