RATIOS, RATES, & PERCENTS

A bookstore offered mystery bags each containing 12 books. The quantity of each type of book was the same in each mystery bag. A shopper bought 3 mystery bags and found that 6 books were spy novels.

Based on this information, which prediction can the shopper make about buying mystery bags in the future?

• There will be 4 more spy novels in 8 bags than in 6 bags.

• There will be 2 more spy novels in 6 bags than in 4 bags.

• There will be 1 more spy novel in 9 bags than in 8 bags.

• There will be 6 more spy novels in 10 bags than in 8 bags.

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7.4.D

The manager of a coffee shop recorded the number of customers who put vanilla creamer or chocolate creamer in their coffee during one hour and classified them by age. The results are shown in the table.

What percentage of these customers put chocolate creamer in their coffee during this hour?

• 30%

• 14%

• 70%

• 75%

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7.4.D

The owner of a bookstore buys used books from customers for $1.50 each. The owner then resells the used books for 400% of the amount he paid for them.

Complete the statement statement.

Move the correct answer to the box. Not all answers will be used

The price of a used book in this store is ​ ​ (a)   .

• $6.00
• $5.50
• $4.00
• $2.10

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7.4.D

• 10 cups

• 40 cups

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7.4.D

The price of a sweater was reduced from $20 to $12. By what percentage was the price of the sweater reduced?

• 8%

• 80%

• 60%

• 40%

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7.4.D

Moises traveled at an average speed of 55 miles per hour for 3.5 hours and then traveled at an average speed of 60 miles per hour for 2.5 hours.

What was the total distance in miles that Moises traveled during this time?

Choose the correct answer from the drop-down menu to complete the statement.

The total distance Moises traveled during this is ​ (a)   miles.

• 342.5
• 347.5
• 330
• 360

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7.4.D

The ratio of boys to girls in Mr. Frias’ class is 2 to 3. There are 18 girls in the class.

What is the total number of students in Mr. Frias’ class?

Choose the correct answer from the drop-down menu to complete the statement.

The total number of students Mr. Frias' class is ​ (a)   .

• 30
• 12
• 45
• 27

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7.4.D

Victor has a collection of 1,200 pennies. Of these pennies, 25% are dated before 1980, 35% are dated from 1980 to 2000, and the rest are dated after 2000.

How many pennies in Victor’s collection are dated after 2000?

• 480

• 720

• 40

• 60

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7.4.D

The price of a video game was reduced from $60 to $45. By what percentage was the price of the video game reduced?

• 15%

• 25%

• 75%

• 40%

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7.4.D

Demi downloaded 264 pictures from her cell phone to her computer. These pictures took up 528 megabytes of space on her computer. Each picture took up the same amount of space. How many megabytes do 35 of these pictures take up?

• 18 MB

• 70 MB

• 8 MB

• 23 MB

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7.4.D