BC=2

　　AC有3/4长度在圆柱体内

　　30. 1998 sales increases x percent from 1997, 1999 sales decreases x percent from 1998, 1999 is 9 percent less than 1997. What is X?

　　My Answer: 30 percent

　　31. R=S/P, in the equation, R is the real salary of a person, S is the current salary, and P is a kind of index. Whether the person K\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\s real salary now is more than the real salary of 1967? K\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\s current salary now is 94% more than that of 1967

　　 the index of 1967 is 100 and the index of now is 182

　　作者答案及思路：

　　33. A和B两个工程，A占2/3，B占余下的，B要花的时间是7/5 as much as A 问B花的时间占总共时间多少，

　　我的答案好象是7/17

　　34. y=1/), What is x defined as?

　　I 4

　　II 6

　　III 8

　　35. 有一个连续数的集合，问7是否在这个集合里面

　　a) -7在里面

　　b) 9在里面

　　36. A rectangle ABCD area is 84, point E is on line AB and AE/EB = 4/3, point F is on line DC, what is area of triangle AFE?

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