23.A time-study specialist has set the production rate for each worker on a contain job at 22 units every 3 hours. At this rate what is the minimum number of worker that should be put on the job if at least 90 units are to be produced per hour?

　　A.7%

　　B.7.5%

　　C.8%

　　D.8.5%

　　E.9%

　　答案：E

　　24.To obtain an FHA mortgage for $50,000 or more, the home buyer must have a down payment equal to 4 percent of the first $25,000 of the mortgage amount and 5 percent of the portion in excess of $25,000. At settlement the buyer pays a mortgage insurance premium equal to 3 percent of the mortgage amount. What is the maximum FHA mortgage, if any, a buyer can obtain if the buyer has only $6,000 available for the down payment and insurance premium?

　　A. $62,500

　　B. $71,875

　　C. $78,125

　　D. $125,000

　　E. The home buyer cannot obtain an FHA mortgage.

　　答案：C

　　25. Working alone, a small pump takes twice as long as a large pump takes to fill an empty tank. Working together at their respective constant rates, the pumps can fill the tank in 6 hours. How many hours would it take the small pump to fill the tank working alone?

　　A.8

　　B.9

　　C.12

　　D.15

　　E.18

　　答案：E

　　26.A candy assortment consists of seven flavors of chocolate-covered creams packed in two-layered boxes with 27 creams in each layer. The flavors are always packed in rows so that the flavor varies with each piece in the following order: vanilla, orange, cherry, vanilla raspberry, lime, pecan, cherry, lemon. How many chocolate- covered vanilla creams are needed to peak 200 boxes of the assortment?

　　A.600

　　B.1,200

　　C.1,800

　　D.2,400

　　E.3,600

　　答案：D

　　27.A research scientist wants to study a certain attribute of dogs. It is estimated that approximately 5 percent of all dogs have this attribute. If the scientist wants to study a sample of N dogs having the attribute, approximately how many dogs should be screened in order to obtain the desired sample size?

　　A.N/5

　　B.5N

　　C.20N

　　D.105N

　　E.120N

　　答案：C

　　比较大小

　　A. If the quantity in column A is greater;

　　B. If the quantity in column B is greater;

　　C. If the two quantities are equal;

　　D. if the relationship cannot be determined from the information given.

　　题目：

　　1.How many positive whole numbers less than 81 are not equal squares of whole numbers?

　　A.9

　　B.70

　　C.71

　　D.72

　　E.73

　　答案：D

　　2. 23(784)

　　24(783)

　　答案：B