Rates RETAKE

Olivia earns $120 for 10 hours of work. What is the unit rate (in dollars per hour)?

• $12 per hour

• $15 per hour

• $20 per hour

• $30 per hour

A unit price is a price per single unit of an item.

• Always

• Sometimes

• Never

• Only if the item is sold individually.

Which mathematical operation is used to calculate proportions?

• addition

• subtraction

• multiplication

• division

Which is the better deal? a 24 pack of Pepsi for $7.00 or a twelve pack of Pepsi for $3.60?

• The 24 pack of Pepsi

• The 12 pack of Pepsi

• Neither

• They are the same

I paid $54.60 to fill up my 15-gallon gas tank. What was the price of gas per gallon?

• $3.60

• $3.64

• $3.70

• $3.50

A woman is running 200 yards per minute. A rate that describes this would have units of

• runs and minutes

• yards and minutes

• yards only

• minutes only

What is an example of a complex fraction?

• 3/4

• 5/8

• (2/3) / (4/5) 

• 7/9

Michael can mow 1/3 of an acre of grass in 3/4 of an hour. How many acres of grass does Michael mow per hour?

• 4/9  acre/hr

• 1/2  acre/hr

• 4/3  acre/hr

• 3/4  acre/hr

Simplify the complex fraction.

• 12

• 1/12

• 18

• 1/6

Calculate.

• 8

• 3

• 12

• 1