帮着看看这两道题谢谢啦

云香113 · 发表于 2010-11-1 14:54:48

If x and y are positive, is 4x > 3y?

(1)x > y - x

(2)x/y < 1

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.
If x and y are positive, is 3x > 7y?

(1)x > y + 4

(2)-5x < -14y

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.

If x and y are positive, is 3x > 7y?

(1)x > y + 4

(2)-5x < -14y

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.

cindyzhizhi · 发表于 2010-11-1 15:03:53

第一题条件1 移项 2X>y 同乘2 4x>2y 推不出条件2 推不出条件1+2也推不出选E
第二题条件1 推不出条件2 5x>14y 2.5X>7y 那3X>7y成立选B
不知想的对不对

云香113 · 发表于 2010-11-1 15:07:41

谢谢啦~~~

帮着看看这两道题谢谢啦

所属分类: GMAT考试

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帮着看看这两道题 谢谢啦

所属分类: GMAT考试

正在浏览此版块的会员 ()

帮着看看这两道题谢谢啦