请问GWD9 Q6，讨论帖里没有

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.

Answer: C A

我选C，因为光凭A的话，如果她的销售额不到2000，那么光知道收入差额是不能知道销售差额的呀，请NN指点

销售额不到2000的话就没有commission啊~

1. Sue's monthly salary was the same in July as in August ， ===》 S

2. Sue's earning was $3,620 in July and $3,580 in August

说明8月比7月少的部分就是少销售的提成，因为基本工资是不变的。

(3620-3580)/4%就是少的sales

A

tracy,如果八月她没有达到2000销售额，没有commission,3580就是基本工资，这样的话用3620-3580得到的是七月的commission,知道七月的销售额，但是八月的销售额是不知道的哟

sunnebj,

如果八月她的销售额是1000，她的工资3580

如果八月她的销售额是1999，她的工资3580

(3620-3580)/4%是七月的销售额中高于2000的部分，并不能知道7.8月销售差距哟

所以必须知道基本工资才行，

偶还觉得是C哎