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The annual interest rate earned by an investment increased by 10 percent from last year to this year. If the annual interest rate earned by the investment this year was 1 percent, what was the annual interest rate last year? A. 1% B. 1.1% C. 9.1% D. 10% E. 10.8% 那位能人会做？给解释一下吧！
Does the decimal equivalent of P/Q, where P and Q are positive integers, contain only a finite number of nonzero digits? (1) P>Q (2) Q=8
l Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient l Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient l BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient. l EACH statement ALONE is sufficient l Statements (1) and (2) TOGETHER are NOT sufficient 这道题给的答案是E. 但是我觉得是A 因为任何数被8除 就可以得到有限小数 不用别的条件 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. 答案是A 我觉得是C 通过1可以求出有多少钱在account里，然后2可以求出答案。可是1中说的是if啊，怎么是答案？
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发表于 2006-11-4 18:03:00
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