1. Ratios and Rates Objective: SWBAT use ratios and rates to solve real-life problems

2. Ratio: a comparison between two different things A ratio can be written: 1) a to b2) a:b3) Ex: if there are 10 girls and 12 boys in the class. The ratio of girls to boys =

3. ratio in which two measurements are related to each other The rate of a per b Example: 120 miles per 2 gallons. Unit Rate : rate per one given unit. Example: 60 miles per gallon Rate:

4. Ex 1Find a Ratio The tennis team won 10 of its 16 matches. Find the ratio of wins to losses. Ratio =

5. Ex 2Find a Unit Rate You run a 10 kilometer race in 50 minutes. What is your average speed in kilometers per minute?

6. Ex 3Find a Rate You kept a record of the number of miles you drove and the amount of gasoline used for 2 months. What was the average mileage for a gallon of gasoline? Round you result in miles per gallon (mi/gal) to the nearest tenth. Miles242212142161 Gas Used141379

7. Ex 4Use Unit Analysis Use unit analysis to convert the units a) 3 hours to minutesb) 72 inches to feet

8. Ex 5Use a Rate Use the average mileage you found in Ex 3 to estimate the number of miles you can drive on a full 18 gallon tank of gasoline. Round your answer to the nearest mile.

9. Ex 6Apply Unit Analysis You are visiting Mexico and want to exchange $150 for pesos. The rate of currency exchange is 9.242 Mexican pesos per United States dollar on the day you exchange the money. How many pesos will you receive? Round to the nearest whole number 1386.30 Pesos About 1386 Pesos