Data Sufficiency

试题详情

题目:

From May 1 to May 30 in the same year, the balance in a checking account increased. What was the balance in the checking account on May 30 ?
  1. If, during this period of time, the increase in the balance in the checking account had been 12 percent, then the balance in the account on May 30 would have been $504.
  2. During this period of time, the increase in the balance in the checking account was 8 percent.

选项:

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:

C

提问:

为什么选择C,解题思路
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提问:

借本题问一下年复利和半年复利的关系。比如本金一万,年利率8%,问半年复息一次,复利计算后终值是多少? 是10000*(1+4%)^2?
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提问:

不会做…
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