2-2: Determine Unit Rates with Ratios of Fractions

8.  Find the unit rate of $97.50 for 15 pizzas.

• $6 per pizza
• $82.50 per pizza
• $5.50 per pizza
• $6.50 per pizza

What is a complex fraction?

• Complex fractions are fractions with one hundred as a denominator.

• Complex fractions are fractions with numerator, denominator, or both that are also fractions.

A recipe calls for 2/3 cup white sugar for every ¾ cup brown sugar. If I want to use 1 cup of white sugar, how much brown sugar should I use?

• 9/8 cups

• 1/2 cups

• 8/9 cups

• 2 cups

Jahzaia A. mows 1/6 of an acre in 1/4 hour. How many acres does Jahzaia A. mow per hour? 

• 6/4
• 2/3
• 2
• 3

What is a unit rate?

• Two unlike things compared to each otehr 
• How often something occurs 
• A rate expressed as something per two
• A rate expressed as something per one

Which is the better deal?
Oreos
$2.98 for 15 oz
OR
Chips Ahoy
$2.50 for 14 oz

• Oreos
• Chips Ahoy
• They are the same

Simplify the complex fraction shown.

• 9/40
• 40/9
• 10/36
• 5/18

Alan walks 5/6 of a mile in 5/12 hour. How far can he walk in one hour?

• 25/72 miles

  in one hour

• 30/60 or 1/2 miles

  in one hour

• 2 miles

  in one hour

A top swimmer would be able to swim across a 25-meter pool in about 1/5 of a minute. How fast can a top swimmer go?

______ meters per minute

• 125 meters per minute

• 5 meters per minute

• 125 minutes per meter

• 5 minutes per meter

Tags

7.RP.A.1

A school janitor has mopped 1/3 of a classroom in 5 minutes. At what rate is he mopping?

____classrooms per minute

____ minutes per classroom

Choose both options

• 1/15 minutes per classroom

• 1/15 of a classroom per minute

• 15 classrooms per minute

• 15 minutes per classroom

Tags

7.RP.A.1