开始做ＧＷＤ题，发现和答案有一定的出入，请各位一同分析一下：
Q10:
A certain quantity is measured on two different scales, the R-scale and the S-scale, that are related linearly. Measurements on the R-scale of 6 and 24 correspond to measurements on the S-scale of 30 and 60, respectively. What measurement on the R-scale corresponds to a measurement of 100 on the S-scale?
A. 20
B. 36
C. 48
D. 60
E. 84
Q15:
If s4v3x7 < 0, is svx < 0?
(1) v < 0
(2) x > 0
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
下面这个图形就是两个内切的圆，abcde五点在通过两圆直径的线上ace 在圆上，bc分别是圆心，问两圆之间部分的面积
1:ab=3 bc=2
2:cd=1 de=4
这道题看到两个版本的答案，我认为d是正确的，不知大伙我如何看
In the figure, points A, B, C, D, and E lie on a line. A is on both circles, B is the center of the smaller circle, C is the center of the larger circle, D is on the smaller circle, and E is on the larger circle. What is the area of the region inside the larger circle and outside the smaller circle?
(1) AB = 3 and BC =2
(2) CD =1 and DE = 4
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.
Q28:
In 1994, Kenneth’s annual salary was 30 percent higher than it was in 1993. In 1995, Kenneth’s annual salary was reduced to 104 percent of his 1993 annual salary. Kenneth’s 1995 annual salary was what percent less than his 1994 annual salary?
A. 16%
B. 20%
C. 24%
D. 26%
E. 28%
C
E
A
B
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