Warm Up Solve the proportion:

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Presentation transcript:

Warm Up 1. 2. 3. 4. 5. Solve the proportion: 73 21 420 18 3.5 23.3 Divide. Round answers to the nearest tenth. 1. 2. 3. 4. 5. Solve the proportion: 73 21 420 18 3.5 23.3 380 16 430 18 23.9 23.8 50(17) = 85p 850 = 85p 10 = p

Homework Review Tonights HW: 5.5 pg. 49

Lesson Quiz = = Solve each proportion. 1. n = 30 2. n = 16 45 18 n 12 24 6 9 = 1. n = 30 2. n = 16

Students will be able to compute unit rates in order to: Determine the average speed of travel. Get the best buy. Examine beauty.

Maximum Speed: 1335 miles per 5 hours. 1335 miles 5 hours Rate: A comparison of two quantities that have different units. Maximum Speed: 1335 miles per 5 hours. 1335 miles 5 hours Bugatti Veyron: Fastest car in the world according to www.the supercars.org

Maximum Speed: 267 miles per 1 hours. 267 miles 1 hour Unit Rate: Rate in which the second quantity is one. Maximum Speed: 267 miles per 1 hours. 267 miles 1 hour Bugatti Veyron: Fastest car in the world according to www.the supercars.org

In order to find the unit rate…. Rate Unit Rate 1335 miles 5 hours 267 miles 1 hour divide the numerator by the denominator.

How fast does the second fastest car go if it travels 771 miles per 3 hours?

A driver is competing in a 500-mile auto race. In the first 2 hours of the race, the driver travels 356 miles. What is the driver's average speed? = 356 mi 2 h = 178 mi/h Divide to find the unit rate. The driver's average speed is 178 mi/h.

Find Unit Rates $60 for 15 hours. 400 words in 10 minutes 30 students for 3 computers. 330 miles in 6 hours. 800 meters in 25 seconds. $4 per hour 40 words per minute 10 students per computer 55 minutes per hour 32 meters per second

Unit Price It’s all about bargain shopping Unit price is a unit rate used to compare price per item.

Which is the better buy?

Finding Unit Prices to Compare Costs Jamie can buy a 15-oz jar of peanut butter for $2.19 or a 20-oz jar for $2.78. Which is the better buy? Divide the price by the number of ounces. price for jar number of ounces $2.19 15 =  $0.15 price for jar number of ounces $2.78 20 =  $0.14 The better buy is the 20-oz jar for $2.78.

Golf balls can be purchased in a 3-pack for $4.95 or a 12-pack for $18.95. Which is the better buy? Divide the price by the number of balls. price for package number of balls $4.95 3 =  $1.65 price for package number of balls $18.95 12 =  $1.58 The better buy is the 12-pack for $18.95.

Determine the better buy. 1) A half dozen carnations for $4.75 or a dozen for $9.24 2) 15 collector cards for $2.75 or 80 for $13.00 3) 16 oz box of cereal for $3.49 or a 6 oz box of cereal for $1.25 a dozen for $9.24 80 for $13 6 oz box for $1.25

Try These! 1. Jacob can buy a 32 oz bottle of BBQ sauce for $2.93 or a 36 oz bottle for $3.19. Which is the better buy? 36 oz 8 pencils $3.57 $52.67 148.25 f 2. John can buy a 8 pencils for $1.25 or a 12 pencils for $2.00. Which is the better buy? 3. Mary made $25.00 for working 7 hours at the mall. How much did Mary make per hour? 4. Lisa paid $158.00 for 3 pair of jeans. What did Lisa pay for each pair of jeans? 5. Bob typed 593 words in 4 minutes. How many words did Bob type per minute?