今天给女儿做一份去年名校考卷，这道题是最后一题她做了很久做不出，我说休息去吧，我来试试看，结果涂了一阵没涂出来。请各位帮帮忙。题目是这样的：
Dolly had 80 more stickers than Jenny. Dolly gave 25% of her stickers to Jenny. Jenny in return give 60% of her stickers to Dolly. In the end,Dolly had 100 stickers more than Jenny. How many stickers did Dolly have at first?
先谢谢帮忙。
小春满月圆的答案是：116(dolly)，36(Jenny)
小春满月园好厉害。答案是正确的。可以告诉我怎么做吗？多谢了。
If Dolly had 100u+80,then Jenny would have 100u.
After giving away 25% of her stickers to Jenny,she will left 75u+60 (60是这么来的：80/4*3)
Jenny will then have 125u+20.
After Jenny gave 60% of her stickers to Dolly,she will have 50u+8,while Dolly will have 150u+72.
Thus,100=100u+64.
So,1u=(100-64)/100=0.36
Dolly=0.36*100+80
or
Dolly :100u+80
Jenny:100u
____________________________
Dolly :75u+60
Jenny:125u+20
____________________________
Dolly :150u+72
Jenny:50u+8
____________________________
1u=(100-64)/100=0.36
上面是小春满月圆的步骤~~~
他的体会：题容易，打出来好费力啊~~~
人家跃跃欲试好几回了
今天，终于逮到机会了
还要谢谢你哈~~~
谢谢，打印出来了，好好研究一下。
小春满月圆又编辑了一下，觉得那样更清楚~~~
小老师真认真，更清楚我也要（太贪婪了）。我觉得我得请客了。
小春满月圆说了，真要请的话，麦当劳就行了。。。
小老师，谢谢你，写得很清楚了。害你这么晚还没睡，只是请麦当劳啊。是真的要请，不开玩笑，周末哪一天你有空呢？