一道Prep 数学,如何解,请教啊

wyfjl2009 · 发表于 2010-8-7 19:54:28

At a certain supplier, a machine of type A costs $20,000 and a machine of type B costs $50,000. Each machine can be purchased by making a 20 percent down payment and repaying the remainder of the cost and the finance charges over a period of time. If the finance charges are equal to 40 percent of the remainder of the cost, how much less would 2 machines of typeA cost than 1 machine of type B under this arrangement?

ANS 13200

agnesliu · 发表于 2010-8-7 19:57:27

20%+80%*40%+80%=132%
也就是说1块钱一共要还1.32块
2*A=4万 B=5万
5-4=1万
1万*132%=13200

wyfjl2009 · 发表于 2010-8-7 20:11:38

谢谢,那么80%*40%只是利率, 什么叫做finance charge 啊?

agnesliu · 发表于 2010-8-7 20:14:49

32%就是finance charge啊

wyfjl2009 · 发表于 2010-8-7 20:17:25

我是说如果翻译成中文是什么啊

superfanluyao · 发表于 2010-8-7 20:22:40

信贷费就是银行赚的那笔钱

wyfjl2009 · 发表于 2010-8-7 20:28:45

谢谢两位大侠得答复

一道Prep 数学,如何解,请教啊

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