(1/20+1)/(1/5+1)=7/8
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LZ, 这道题怎么算的,我算的怎么不一样呀?
1。去年生产heater的profit和cost之比是20%,今年这两者之比降到5%,另一条件是两年的cost相同。问今年和去年heater的售价之比。答案是87.5%去年:p1/c=20%
今年:p2/c=5%
so: S2/S1=p2-c/p1-c =5%c-c/20%c-c=95/80
错在哪了,请指点!谢谢!
Congradulations!! You are awesome and lucky. Wish I would have the luck the same as yours.
谢谢分享
Congratulations!!! We are schoolmates, wish I would be lucky,too! Congratulation again!
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