标题: 一道Prep 数学,如何解,请教啊 [打印本页] 作者: wyfjl2009 时间: 2010-8-7 19:54 标题: 一道Prep 数学,如何解,请教啊 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?
