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17.) The sum of three numbers is 1133. One of the numbers, k, is 20% greater than the sum of the other
two numbers. What is the value of k?
A) 453
B) 515
C) 618
D) 906
18.) A rectangle was altered by increasing its length by 20% and decreasing its width by p percent. If
these changes decreased the area of the rectangle by 40%, what is the value of p?
A) 10
B) 15
C) 25
D) 50
19.) A city planner estimates that the population of a certain small town will increase by 5% every 10
years. If the current population of the town is 10,000, which of the following expressions represents the
population y years from now?
A)
B)
C)
D)
20.) A high school administrator is giving a civics quiz to all the juniors in her school to prepare them for
an upcoming election. There are 420 juniors in the school, and she gives them the quiz over two days.
On the first day, she gives the quiz to 210 juniors, and 160 of them answer the first question correctly.
On the second day, she gives the quiz to the remainder of the students, and j answer the first question
correctly. If more than 80% of all the juniors answered the first question correctly, which of the
following inequalities best describes the possible values of j?
A)
B)
C)
D)