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OG12-96

Hotco oil burners, designed to be used in asphalt plants, are so efficient that Hotco will sell one to the Clifton
Asphalt plant for no payment other than the cost savings between the total amount the asphalt plant actually
paid for oil using its former burner during the last two years and the total amount it will pay for oil using the
Hotco burner during the next two years. On installation, the plant will make an estimated payment, which will be
adjusted after two years to equal the actual cost savings.
Which of the following, if it occurred, would constitute a disadvantage for Hotco of the plan described above?
(A) Another manufacturer’s introduction to the market of a similarly efficient burner
(B) The Clifton Asphalt plant’s need for more than one new burner
(C) Very poor efficiency in the Clifton Asphalt plant’s old burner
(D) A decrease in the demand for asphalt
(E) A steady increase in the price of oil beginning soon after the new burner is installed

E 选项感觉不对啊,题目说付款是由实际节省下来的钱决定的,如果价钱却高,那么高效率的设备节省的就越多啊。这应该是优势啊。等NN解惑

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我觉得:这个burner所能节省下来的油数量是一定的(我们假设现在一年用量是1000仑)(假设油价为2块钱一仑,以前是1块钱一仑)总金额为2×1000=2000块

而burner的公司是收多少钱呢:between the total amount the asphalt plant actually
paid for oil using its former burner during the last two years and the total amount it will pay for oil using the Hotco burner during the next two years。

这样看,我们假设过去用量是2000仑,过去两年油价是1块钱每仑。那么total amount=1*2000=2000块

这样一来burner公司的收入就是2000-2000=0!这不就是对他不利了吗?

如果油价没变,公司的收入应该是1*2000-1*1000=1000块

不知道我的理解对不对?

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多谢2楼的解释。还有疑问

这个burner所能节省下来的油数量是一定的(我们假设现在一年用量是1000仑)(假设油价为2块钱一仑,以前是1块钱一仑)总金额为2×1000=2000块’应该算两年的吧,2 x 1000 x 2 =4000

这里该用哪个数减那个数。(我数学还没看), LS的减法收入就变负值了。。。。也就是说只要油涨价就倒贴钱 要是反过来减就多了。 晕了。。。。。。

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“也就是说只要油涨价就倒贴钱”

对呀,这就是对他不利的原因啊,如果油价涨得很多,是不是买家根本就省不了钱啊(数量省了,价格涨了)。一直涨下去的结果就是,省油的钱=涨价的钱。

变成负值不就是说明了没有节省钱,因为油价涨得太多,导致节省的油没有任何作用。

而且,你只要看明白关系就行了啊。。算这么清楚要干什么。。

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楼上说的对,只要心里清楚这个关系就行了,我那样说也是希望能说的清楚点,这和一年还是两年没什么关系的啊。是用前两年的用油量乘以油价-后面跟两年的用油量乘以油价

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Payment=Cost savings=P1Q1-P2Q2 

根据已知,Q2<Q1,若P2=P1,则Cost savings是固定的。

现在E选项说P2增加了,那么Cost savings肯定就减少了。

D选项demand减少,则supply也会随之减少,那么Q2就会更少,Cost savings就更大了,也就是说这个选项是support

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