请教一道模考时遇到的题目，从repaying the...后面就完全不理解了，求解释啊！

离南 · 发表于 2011-10-13 09:53:26

At a certain supplier, a machine of type A costs $20000 and a machine of type B costs $ 50000.Each machine can be purched by making a 20 percent down payment and repaying the ramainder of the cost and the finance charges over a period of time.If the finance charges are equal to 40 percent of remainder of the cost,how much less would 2 machine of the remainder of the cost,how much less would 2 machines of type A cost than 1 machine of type B under this arrangment?

A 10000

B11200

C12000

D12800

E13200

牧月 · 发表于 2011-10-13 09:57:05

LZ你题目确定没打错么？我觉得这句好奇怪how much less would 2 machine of the remainder of the cost

牧月 · 发表于 2011-10-13 09:59:56

A: 20000*0.2+20000*0.8*(1+0.4)
B: 50000*0.2+50000*0.8*(1+0.4)

2A-B = -13200

不晓得是不是正确答案？

离南 · 发表于 2011-10-13 10:02:24

木有打错，是全文复制的

离南 · 发表于 2011-10-13 10:02:52

哦呀，答案是E，我好好体会下

离南 · 发表于 2011-10-13 10:04:34

晕死，我把repay理解错了，怪不得做不出来，多谢楼上啦

永远爱koma62 · 发表于 2012-1-10 22:48:11

哦哦，明白了！

请教一道模考时遇到的题目，从repaying the...后面就完全不理解了，求解释啊！

所属分类: GMAT考试

正在浏览此版块的会员 ()