Ratios, Proportions and Unit Rate

Find the Unit Rate.
405 rotations in 5 minutes   

• 81 rotations per minute
• 73 rotations per minute
• 18 rotations per minute
• 810 rotations in 10 minutes

Solve the proportion.

• k=5
• k=3.3333333
• k=60
• k=90

On a map, if one centimeter represents 25 kilometers, how many kilometers does 7 centimeters represent?

• 175
• 185
• 200
• 220

Do the ratios form a proportion?

• Yes, they form a proportion.
• No, they do not form a proportion.

Does the table represent a proportional relationship?

• Yes.
• No.

Does the table represent a proportional relationship?

• Yes.
• No.

In an animal shelter, the ratio of dogs to cats is 5 to 3. There are 25 dogs.  Write and solve a proportion to find the number c of cats.

• c=15
• c=18
• c=21
• c=16

Hamburger sells for 3 pounds for $6. If Alicia buys 10 pounds of hamburger, how much will she pay?

• $30
• $20
• $60
• $10

You spend $40 on 5 pounds of concrete. What is the unit rate in dollars per pound?

• $8 per pound
• $5 per pound
• $35 per pound
• 0.125 pounds per dollar

There are 75 pieces of candy in a 15 oz bag.

How many pieces are there per ounce?

• 5 pieces

• 0.2 pieces

• 50 pieces

• 60 pieces