MCAS 2002, 8th Grade Math, Questions 5 to 8

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Question #5

May Ling has two spinners, as shown below. She will spin each arrow once and add the results.

Which of the following sets represents every possible outcome?

A. {25, 30, 35, 40}

B. {15, 20, 25, 30, 35, 40}

C. {20, 25, 30, 35, 40, 45}

D. {10, 15, 20, 25, 30, 35, 40, 45, 50}

Question #6

The rates that Zack charges for baby-sitting are as follows:

$2.50 per hour for the first child and
an extra 75¢ per hour for each additional child.

Which chart below shows Zack’s hourly charges for baby-sitting one, two, and three children?

Question #7 (Short-Answer Question)

Natalie bought a book that was on sale for 25% off. The regular price of the book was $18. What was the sale price of the book?

Question #8 (Short-Answer Question)

There are yellow, pink, and purple balloons in a package. If Benjamin takes 1 balloon without looking, the probability that it will be yellow is 1/2. The probability that it will be pink is 1/3. The probability that it will be purple is 1/6. What is the least number of balloons that could be in the package?

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