问题求解

alex318 · 发表于 2010-10-24 01:08:59

1 How many seconds will ti take for a car that is travelling at a constant rate of 45 miles per hour to travel a distance of 22 yards? (1 mile = 1160 yards)
A. 8
B. 9
C. 10
D. 11
E. 12

2 If n is a positive integer and r is the remainder when (n-1)(n+1) is divided by 24, what is the value of r?
(1) 2 is not a factor of n.
(2) 3 is not a factor of n.

3 Last year the price per share of Stock X increased by k percent and the earnings per share of Stock X increased by m percent, where k is greater than m. By what percent did the ratio of price per share to earnings per share increase, in terms of k and m?
A. k/m%
B. (k-m)%
C. [100(k-m)]/(100+k) %
D. [100(k-m)]/(100+m) %
E. [100(k-m)]/(100+k+m) %

Answer： 1 C 2 C 3D

求NN给解答。。。。。。。

Lubysmarble · 发表于 2010-10-24 04:24:15

答案如附件所示

alex318 · 发表于 2010-10-24 20:49:43

谢谢大牛，第一题弄了半天是印刷错误，弄我算了半天也不对。
第三题弄了半天我读错了题意。

还是再次谢谢大牛啊。。。。。

问题求解

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