Is 2x > 2y ?
(1) x > y
(2) 3x > 3y
Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
EACH statement ALONE is sufficient.
Statements (1) and (2) TOGETHER are NOT sufficient.
题目分析:
要判断是否2x>2y,不等式两边同时除以2,即判断是否x>y。
(1)对于条件1,直接满足。
(2)对于条件2,不等式两边同时除以3,满足要求。
因此,本题答案为(D),任何一个条件均能说明问题。