Unit 3 Review- Ratios, Rates, Proportions, Percents

Kelly ate 3 apples. This represents 50% of the bag of apples. How many apples were originally in the bag?

• 3

• 4

• 5

• 6

The ratio of boys to girls in Mr. Baker's social studies class is 2 to 3. If there are 30 total students in class, how many more girls are in the class than boys.

• 6

• 8

• 10

• 12

Kenton completed 30% of the 90-page reading assignment. How many pages did he read?

• 24

• 27

• 30

• 33

The ratio of blue marbles to white marbles in Simon's bag is equal to 1 to 2. If there are 20 blue marbles, how many white marbles are there?

• 20

• 30

• 40

• 50

Aaron cut a piece of mental that weighed 2,700 grams. Dionne cut a piece of metal that weighed 3,200 grams. How much heavier was Dionne's piece in kilograms?

• 0.5

• 5

• 50

• 500

The ratio of green house to white houses on Winthrop Street is equal to 2 to 3. There are 60 white houses on Winthrop Street. How many green houses are there?

• 20

• 30

• 40

• 50

What is 40% of 120?

• 32

• 40

• 48

• 60

Nelly spends 25% of her free time surfing the internet. If she spends about 1 hour per day surfing the internet, how many hours of free time does she have each day?

• 0.25

• 1

• 2

• 4

Brent counted 10 red cards, 10 black cards, and 20 blue cards in a deck of cards. What is the ratio of red cards to other cards?

• 1:1

• 1:2

• 1:3

• 2:1

Winnie can walk 2 miles in 30 minutes. How many miles can she walk in 2 hours?

• 2

• 4

• 6

• 8