1952 AMC 12 第 14 题

Question

一栋房屋和一家商店分别以

\$12000

售出。房屋的售价比成本低

20\%

，商店的售价比成本高

20\%

。整个交易的结果是：

A house and store were sold for

\$12000

each. The house was sold at a loss of

20\%

of the cost, and the store at a gain of

20\%

of the cost. The entire transaction resulted in:

不赚不赔

No loss or gain

亏损

\$1000

Loss of

\$1000

获利

\$1000

Gain of

\$1000

获利

\$2000

Gain of

\$2000

以上答案均不正确

None of these

答案：B

知识点：百分数钱币

难度评级：1310

小提示：

分别由两件资产的售价反求原成本

Recover each original cost from its selling price separately

大提示：

房屋售价为成本的

80\%

，商店售价为成本的

120\%

The house sold for

80\%

of cost, while the store sold for

120\%

of cost

解答：

房屋成本为

\frac{12000}{0.8}=15000

美元，商店成本为

\frac{12000}{1.2}=10000

美元。总成本为

25000

美元，总售价为

24000

美元，因此亏损

1000

美元。

因此，正确答案是 B。

The house cost

\frac{12000}{0.8}=15000

dollars, and the store cost

\frac{12000}{1.2}=10000

dollars. The combined cost was

25000

dollars, while the combined selling price was

24000

dollars, producing a loss of

1000

dollars.

Thus, the correct answer is B.

1952 AMC 12 第 14 题

答案：B

难度评级：1310

小提示：

大提示：

解答：

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