两道GMAT数学题求解答

Question

Was the average (arithmetic mean) weight of the package mailed at a certain post office yesterday greater than 600 grams?
(1) The total weight of the packages mailed at the post office yesterday was greater than 14,500 grams.
(2) Fewer than 25 packages were mailed at the post office yesterday.

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.

答案为C

In a recent election, Ms. Robbins received 8,000 votes cast by independent voters, that is, voters not registered with a specific political party. She also received 10 percent of the votes cast by those voters registered with a political party. If N is the total number of votes cast in the election and 40 percent of the votes cast were cast by independent voters, which of the following represents the number of votes that Ms. Robbins received?

A. 0.06N + 3,200
B. 0.1N + 7,200
C. 0.4N + 7,200
D. 0.1N + 8,000
E. 0.06N + 8,000
答案为E，这题我都没看懂是什么意思

希望能给出详细步骤，谢谢了！

Answer 1

这是第几题啊，你可以到海翔GAMT考试论坛上找找答案，上面基本上所有题的题解机经都有。

追问

那你帮我找一下啊