Betty and Anna work in the same office in Sydney.They must a

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Betty and Anna work in the same office in Sydney.They must attend a
meeting in Melbourne and decide to drive to the meeting together,a journey
which would take one day.Betty is a cigarette smoker and her marginal
benefit from smoking a packet of cigarettes is $80.Cigarettes cost $12 a
packet,and Betty would smoke one packet on the way to Melbourne.Anna
dislikes cigarette smoke,and her marginal benefit from a smoke-free
environment is $100 a day.What is the outcome if
a) Betty drives her car with Anna as a passenger?
b) Anna drives her car with Betty as a passenger?

贝蒂和安娜在同一间办公室工作在悉尼.他们必须要参加一个
会议在墨尔本和决定开车到这个聚会,一段旅程
这可以带着有一天.贝蒂是个抽烟者和她的边缘
受益于吸烟一包香烟是80美元.香烟成本12美元一
包,和贝蒂会抽一包墨尔本的路上.安娜
不吸烟,她来自一个无烟边际效益
环境是100美元一天.结果是什么
一)贝蒂开车和安娜作为一名乘客吗?
b)安娜开车和贝蒂作为一名乘客吗?

Mike and Dick work in the same office.They don't like the co Mike and Dick work in the same office. Mr.Smith and I work in the same office.He is the of us and w Jane and maria are in the same school They are_______ A:work 英语翻译Sam and Mike worked in the same office and they were fri 英语完形填空（Sam and Mike worked in the same office and they were Mike and Jack work in the same factory.They have the same ho 英语翻译Mr jones and Mr Brown work in the same office.One day Mr 一道英语题Mr.Jones and Mr.Brown work in the same office.One day M 英语翻译Mary and Jane worked in a same office and they were 1--- Anna and her sister live in the same bedroom.(同义句）Anna ( )th 同义句转换1.Anna and her sister live in the same bedroom.Anna ___