[讨论]TTGWD9-6深奥

raikey

Q6:

Sue’s monthly earnings consist of a monthly salary and a 4 percent commission on the portion of her monthly sales that is in excess of $2,000.  If Sue’s monthly salary was the same in July as in August, how much greater were her sales in July than in August?

(1)      Sue’s monthly earnings were $3,620 in July and $3,580 in August.

(2)      Sue’s monthly salary was $3,500 in July and in August.

                            

A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.

B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.

C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.

D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient.

此题应该是选E吧,因为题中下了个套:"月基本工资不变,但具体数目不知道".

因此条件(1)中的3580可能就是基本工资啊!也就是说即使销售额不超过2000,也能赚3580. 虽然很荒谬,但这是一种可能啊,不能排除.

这时,就不知道August到底销售了多少.

strout

A.

how much greater were her sales in July than in August

(SalesJune -2000)4% + Base = 3620

(SalesAug - 2000)4% + Base = 3580

You can get (SalesAug - SalesJune) without knowing the exact number of June or August sales.

strout

以下是引用raikey在2007-5-15 0:34:00的发言：

Q6:

Sue’s monthly earnings consist of a monthly salary and a 4 percent commission on the portion of her monthly sales that is in excess of $2,000.  If Sue’s monthly salary was the same in July as in August, how much greater were her sales in July than in August?

(1)      Sue’s monthly earnings were $3,620 in July and $3,580 in August.

(2)      Sue’s monthly salary was $3,500 in July and in August.

                            

A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.

B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.

C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.

D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient.

此题应该是选E吧,因为题中下了个套:"月基本工资不变,但具体数目不知道".

因此条件(1)中的3580可能就是基本工资啊!也就是说即使销售额不超过2000,也能赚3580. 虽然很荒谬,但这是一种可能啊,不能排除.

这时,就不知道August到底销售了多少.

Still A. because June and August are same base salary. If base salary has to be less than 3620, if it's 3620, then you can calculate August's sales.

raikey

假设基本工资是3580,

那么July有3620=3580+(sale-2000)*4%=>July sale=3000,

但是August的sale可能是0~2000之间的任意一个数,

所以这2个月的sale差值不能确定.

redEmpire

应该选E

根据条件（1），
                    $3,620 in July
                的工资对应的sales（记为S－July）肯定是大于2000的，但$3,580 in August的工资不确定，很可能在0到S-July之间均可，

而条件（2）与条件（1）是矛盾的，因此都不能确定。

strout

I see. It's tricky.

hsummer

1,monthly salary<3580,   x+4%S=3620    x+4%S'=3580两式作差，S-S'
2,monthly salary=3580    x+4%S=3620    4%S=3620-3580=40   S=1000<2000与题设矛盾，排除
3,3580<monthly salary<3620   x+4%S=3620      4%S<3620-3580   S<1000<2000 排除
所以只能是第一种情况吧

agree A

[此贴子已经被作者于2007-5-15 21:12:23编辑过]

shero

是c丫，正如前面几楼所言，1是不充分的，但是1和2加起来不就很明显充分了吗？monthly salary和monthly earnings是两个不同的概念，题干中也分别都有很明确的指代对象，大家不要混起来了

raikey

噢,对头,楼上一语惊醒梦中人啊,应该选C.

monthly earning = monthly salary + sale*4%

(1)=>monthly earning of July=3620,monthly earning of August=3580无法确定sale

(2)=>monthly salary=3500,也无法确定sale

但(1)+(2)=> 3620=3500 + July sale*4%

            3580=3500 + August sale*4%

得到July sale=3000,August sale=2000,可以确定sale

所以选C.