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Ratios and Rates

cost number of minutes. $4.50 30 min. Write a rate comparing cost to minutes. =. Divide. = $.15/min. COURSE 3 LESSON 5-1. Ratios and Rates. Computer time costs $4.50 for 30 min. What is the unit rate?. The unit rate is $.15 per minute. 5-1. Vanessa. Keneesha. Write the rates

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Ratios and Rates

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  1. cost number of minutes $4.50 30 min Write a rate comparing cost to minutes. = Divide. = $.15/min COURSE 3 LESSON 5-1 Ratios and Rates Computer time costs $4.50 for 30 min. What is the unit rate? The unit rate is $.15 per minute. 5-1

  2. Vanessa Keneesha Write the rates comparing miles to gallons. miles gallons 267 mi 11 gal miles gallons 210 mi 9 gal = = Divide. 23.33333333 mi/gal 24.27272727 mi/gal Round to the nearest tenth. 24.3 mi/gal 23.3 mi/gal COURSE 3 LESSON 5-1 Ratios and Rates Keneesha drove her car 267 mi using 11 gal of gas. Vanessa drove her car 210 mi using 9 gal. Give the unit rate for each. Which car got more miles per gallon of gas? Keneesha’s car got more miles per gallon. 5-1

  3. Check for Reasonableness 24.3 • 11 = 267.3 and 267.3 267. Also, 23.3 • 9 = 209.7 and 209.7 210. The answers are reasonable. COURSE 3 LESSON 5-1 Ratios and Rates (continued) 5-1

  4. 1 15 COURSE 3 LESSON 5-1 Ratios and Rates Express each ratio in simplest form. 1. 27 laps : 81 minutes 2. 12 minutes : 3 hours 3. Carli walked 16 miles in 5 hours. Find the unit rate. 4. A 21-oz bottle of shampoo costs $2.80. A 12-oz bottle costs $1.35. Which has the better unit rate? 1 3 3.2 mi/h 12-oz bottle 5-1

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