对比两道数学题的理解！

meltsteel

GWD7_Q13:

Is the number of seconds required to travel d₁ feet at r₁ feet per second greater than the number of seconds required to travel d₂ feet at r₂ feet per second?

(1)       d₁ is 30 greater than d₂.

(2)       r₁ is 30 greater than r₂.

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.

GWD11-Q28:

In 1994, Kenneth’s annual salary was 30 percent higher than it was in 1993.  In 1995, Kenneth’s annual salary was reduced to 104 percent of his 1993 annual salary.  Kenneth’s 1995 annual salary was what percent less than his 1994 annual salary?

A.       16%

B.       20%

C.       24%

D.       26%

E.       28%

      以上两题中对划红部分的理解是一样的吗（我觉得应该是一样的）？即第一道题中d1=1.3d2,r1=1.3r2;第二道题中1994年的salary是1993年的1.3倍。

      如果是一样的话，则第一道题的答案应该是c而不是e了；

     

blackhorse

划线部分的理解是一致的，可是后面你的结论是错误的。这完全是两道不同的题目，思维方式也不一样，虽然条件表达是相似的，理解是一样的。

但，因为第二题问的是Kenneth’s 1995 annual salary was what percent less than his 1994 annual salary?

看见less than 了吗？

你再好好想想区别，何况不想区别，直接做每道题，最后不要把他们混淆。

meltsteel

blackhorse:

       你的意思是说两道题中，greater/higher than(or less than)应该按照大于和 小于来理解吗?而不是按照一个确定的值来理解，

blackhorse

是的，就是这个意思。

meltsteel

3Q