Prep 数学DS中的几道题不太懂，请牛人们指点一下哈

140. 14610-!-item-!-187;#058&010398

A manufacturer produced x percent more video cameras in 1994 than in 1993 and y percent more video cameras in 1995 than in 1994. If the manufacturer produced 1,000 video cameras in 1993, how many video cameras did the manufacturer produce in 1995 ?

 (1) xy = 20

 (2) x + y + 100xy = 9.2

答案是B,但偶觉得应该是C啊，真看不出B一个条件怎样把题解出来，还是自己功力不够啊！请牛人指点一下！！！

191. 18547-!-item-!-187;#058&011999

Is the positive integer j divisible by a greater number of different prime numbers than the positive integer k ?

(1) j is divisible by 30.

(2) k = 1,000 192.

唉，这个题主要是题干读不懂，呜呜~~~~~

第一题~你自己算下就会发现要求解的是x%+y%+xy/10000=多少，再把它通下分就变成题目中2的模样（你抄错了题，请仔细看）了，不需要知道具体x,y或者是xy等于多少

第2题，选C，说的就是j能被不同质数整除的个数比k能被不同质数整除的个数多吗？

j能被2，3和5整除；k能被2和3整除

谢谢楼上