3.There is a circular water fountain of Diameter 12m.The wall of the tank has a width of 2m. If the thickness of the fountain is0.06m, what is the volume of the concrete used in constructing the tank?
Ans: 1.68 pie

我做出來是12*2*0.06*pie=1.44 pie，，咋弄出來的？。。。

8. A label of vertical width w is stick on acylinderical vessel with area A(some

number) and height 10 cm.
Cola: w
Colb: 4.5
Ans: D

10.There was a $25 discount on every purchase of $75there was a 10% charge on

shipping which was added before the discount and 20% sales tax after the discount

was added. If john paid total $300, whatwas the original amount of purchase if no

sales tax was added per $75
Ans : 240.
這道題沒看明白，是說算原始價(jià)格嗎？還是只算不加稅的咩？
如果只算不加稅的，也應(yīng)該是 300/（1+20%）=250...

3.The area of rectangular region R is equal to thearea of rectangular region T.
The Ratio of the length to the width of R is 3 to 1.
the length & width of T are 12 & W, respectively.
Col A : w
Col B : 4
Ans: C

兩個(gè)只是面積相等，有沒有相似，憑啥w就等于4了。。。

8. Given Principal amount P,rate of interest was r,and the amount increase from

1990 to 1995 and 1995 to 2000 each time by r%. sothe total amount was (7/5)p at the

end of 2 yrs .
Col A : r
Cola B: 20

這個(gè)沒答案，是B嗎？。。。兩次都增長20%，會(huì)大于7/5，故r應(yīng)該小雨20。。。

1. What is the least possible product of 4 different integers,each of which has a

value between –5 and 10, inclusive?
(A) - 5040
(B) - 3600
(C) - 720
(D) - 600
(E) - 120
Ans : B
-3600=-5*8*9*10
我覺得應(yīng)該選A，5040=7*8*9*10不可能有負(fù)值，不知道between包不包括-5和10，不過如果這樣

算的話，-5040也不對(duì)

5. A ranch has horses and ponies. Five-sixths of theponies have horseshoes. Half of

the ponies with horseshoes are Icelandic. Ifthere are three more horses than

ponies, what is the minimum number of horsesand ponies on the ranch?
A. 12
B. 15
C. 27
D. 48
E. 54
Ans: C