求助一道GWD题目，谢谢。

飞行2010 · 发表于 2010-2-20 15:59:28

5.The charge for a single room at Hotel P is 25 percent less than the charge for a single room at Hotel R and 10 percent less than the charge for a single room at Hotel G. The charge for a single room at Hotel R is what percent greater than the charge for a single room at Hotel G ?

15%

20%

40%

50%

150%

R-P/R=25%, G-P/G=10%, 求R-G/G.

不知道是算错了还是理解错了，我算的是27%，没有这个选项。请大牛看看，谢拉。

qfxl · 发表于 2010-2-20 16:18:19

算错了吧，我算的是20%

飞行2010 · 发表于 2010-2-20 16:31:55

谢谢，式子是对的吗？

飞行2010 · 发表于 2010-2-20 16:37:13

7.A store purchased a Brand C computer for the same amount that it paid for a Brand D computer and then sold them both at higher prices. The store's gross profit on the Brand C computer was what percent greater than its gross profit on the Brand D computer?

(1) The price at which the store sold the Brand C computer was 15 percent greater than the price at which the store sold the Brand D computer.

(2) The store's gross profit on the Brand D computer was $300.

A 为什么不可以？
Cost of Brand C computer = X
Cost of Brand D computer = X (both same)
Let the brand C computer is sold at price = SC
profit => SC-X let's say PC => SC = PC+X => SC-X = PC
Let the brand D computer is sold at price = SD
Profit => SD-X let's say PD => SD = PD+X => SD-X=PD
Question PC/PD = ? PC/PD = (SC-X)/(SD-X)
Stmt1
Directly says price on Computer C is 15% greater than price on computer D
SC=1.15SD => (1.15D-x)/D-X

qfxl · 发表于 2010-2-20 16:44:54

式子是对的。
假如C是115元卖出，D是100元卖出，同时D是90元买入，那么D的利润是10元，C可以有好多个取值，所以C与D的利润比是无法确定的。

飞行2010 · 发表于 2010-2-20 16:47:42

你真聪明！呵呵。比我做的快多了。

求助一道GWD题目，谢谢。

还有一个题。。。谢谢。

所属分类: GMAT考试

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