Understanding ratio notation, rate language and unit rates

A rate is

• A comparison of 2 measurements in which the denominator has a value of 1 unit

• A comparison of two quantities using division

• A ratio that compares 2 quantities that are measured in different units

• None of the above

Raghvendra has a total of 12 apples and 28 oranges. What is the ratio of apples to the total number of fruits?

• 3 : 7

• 7 : 3

• 3 : 10

• 10 : 3

Jill can make 2 bracelets in 3 hours. What is the unit rate of hours/bracelet ?

• 3/2

• 1.5/1

• 2/3

• 1/1.5

A recipe requires 6 cups of sugar to make 24 cupcakes. What is the unit rate in cups per cupcake?

• 1/4

• 1/3

• 1/2

• 1/6

Isabella flew 600 miles in 120 minutes.  How many miles per minute did she fly? 

Find the unit rate or unit price.

We swam 100 yards in 2 minutes.

Mr. Adams earned $320 at his sales job yesterday. He received $200 in commissions and worked for 8 hours. What is his pay per hour not including commissions?

• $55 per hour

• $40 per hour

• $25 per hour

• $15 per hour

In a class there are 20 boys and 15 girls. Find the ratio of number of boys to number of girls.

• 1:20

• 10:1

• 5:2

• 4:3

Michael has 17 hoodies. 3 don't have hoodies. Which ratio shows How many hoodies there are in total to how many have hoodies?

• 17:3

• 3:17

• 17:14

• 14:17

A bag of marbles contains 8 red marbles and 4 blue marbles. What is the ratio of red marbles to blue marbles?

• 2:1

• 4:8

• 3:5

• 5:3