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题库 / OG2017Q-DS-251
If the total price of n equally priced shares of a certain stock was $12,000, what was the price per share of the stock?
(1) If the price per share of the stock had been $1 more, the total price of the n shares would have been $300 more.
(2) If the price per share of the stock had been $2 less, the total price of the nshares would have been 5 percent less.
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：
设每股价格为x美元，有nx=12000。
（1） n(x+1)=12000+300，即nx+n=12000+300，n=300，代入nx=12000解得x=40，题目得解。
（2） n(x-2)=12000*(1-0.05)，即nx-2n=11400，因为nx=12000，解得n=300，代入nx=12000解得x=40，题目得解。
因此，本题答案为（D），任何一个条件说明均能解题。
不要主观臆断，和排队题目不同！