小宝来遛狗。。。祈福，保佑，大宝考试一定成功。。。

小困蛇

学习LZ心态~预祝下次成功！

flowerycc

顶LZ  加油！！！  不要放弃。。。    谢谢LZ的狗狗  ~~

wengyue31

楼主加油！我连楼主这等水平都没有。。弱问楼主此番多少分呀？

sdcar2010

新狗狗，题让我困惑了好久说的是ABC三个人pay 什么repairment fee of their own units, B paid 100$ more than A C together paid twice than the amount that B paid划线这句话超级郁闷, 求B paid
（1）三人共同paid=700$
(2) 忘记

Suppose A paid a dollars, then B paid a+100 dollars, and C paid 2*(a+100)

(1) is sufficient.

mudiduange

3q