21.Sixty-eight people are sitting in 20 cars and each car contains at most 4 people. What is the maximum possible number of cars that could contain exactly 1 of the 68 people?
A.2
B.3
C.4
D.8
E.12
答案：C
22.Art,Bob and Carmen share a prize of $400. If Art receives twice as much as Bob, and if Bob receives 1/2 as much as Carmen, how much does Carmen receive?
A.$20
B.$40
C.$80
D.$140
E.$160
答案：E
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
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GRE数学代数重点例题(2)
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- GRE数学代数重点例题(1)