标题: 两道GWD数学题，求思路 [打印本页] 作者: wayhas 时间: 2010-8-4 15:48 标题: 两道GWD数学题，求思路 1.A pharmaceutical company received $3 million in royalties on the first $20 million in sales of the generic equivalent of one of its products and then $9 million in royalties on the next $108 million in sales. By approximately what percent did the ratio of royalties to sales decrease from the first $20 million in sales to the next $108 million in sales?
A. 8% B. 15% C. 45% D. 52% E. 56%
2.Is the integer n odd? (1) n is divisible by 3. (2) 2n is divisible by twice as many positive integers as n.
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.