Ratios and Rates

The table above shows the time Angela worked and the amount of money she earned during four different weeks. Based on the information in the table, how much will Angela earn if she works 40 hours in a week?

• $380

• $341. 75

• $390

• $390.25

What is a rate?

• the comparison of units

• the comparison of same units

• the comparison of ratios

• the comparison of different units

The table shows how much different numbers of baseballs cost. If the cost per ball is the same, how much would it cost to purchase 7 baseballs?

The table shows turkey sandwich sales at a deli. Each sandwich costs the same amount. How many sandwiches are in the order if the total cost is $54.00?

Selena made pancakes for an all-day breakfast fundraising event. She made 132 pancakes in 2 hours. Selena needs to make 264 more pancakes. If she continues at the same rate, how many hours will it take for Selena to make 264 more pancakes?

Whitney can run 50 feet in 10 seconds. At this rate, how many feet can Whitney run in 2 minutes?

The relationship between the cost, c, in dollars, of a turkey sandwich and the number of turkey sandwiches, n, purchased can be modeled by the proportional equation c = 4.25n. How much do 5 turkey sandwiches cost?

Four customers at a grocery store are buying apples. The table shows how many pounds of apples each customer bought and how much each customer paid. After the previous four customers, another customer, Timothy, spent $28.00 buying apples. We can determine that Timothy bought ___ pounds of apples.

What is a Ratio?

• Is a comparison of two quantities 

• A rate with a denominator of one

• It is when the only factor the numerator and denominator share is a one 

• Two decimals that can be multiplied

What is the ratio of red apples to green apples

• 7 apples to 3 green

• 4 red apples to 7 apples

• 4 red apples to 3 green apples

• 3 green apples to 4 red apples