MCAS 1999, 8th Grade Math, Questions 17-20

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Question #17

Kevin is standing next to the school's flagpole on a sunny day as shown in the diagram below.

Kevin is 5 feet tall. Which proportion could you use to find the height of the flagpole?

Question #18

Use the chart below to answer question 18.

If a band member is chosen at random to represent the band at a parent-teacher meeting, which is the best estimate of the probability that an eighth grader will be chosen?

A. 33%

B. 50%

C. 67%

D. 85%

Question #19

A principal appointed a committee to decorate a row of lockers numbered 1 to 150. The committee decided to put

a flower sticker on each 4th locker beginning with locker 4,
a red band of color on each 10th locker beginning with locker 10, and
a balloon sticker on each 15th locker beginning with locker 15.

How many lockers got all three decorations?

A. 2

B. 6

C. 4

D. none

Question #20

Of the 640 students in a school, 428 were born in Massachusetts. If a newspaper reporter interviews one student at random, which is the best estimate of the probability that the student was born in Massachusetts?

A. 1/2

B. 2/3

C. 2/1

D. 3/2

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