CHAPTER Ratios, Rates, and Proportional Reasoning

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Name: _____________________________________________________Date: ______________7. Stephanie counted 20 vehicles in a parking lot.Five were silver, 4 were blue, 2 were red, and 1 was yellow.a) What is the ratio of yellow to red to silver vehicles?b) What is the total number of silver, blue, red, and yellow vehicles?Sentence: _________________________________________________________________c) How many vehicles are not silver, blue, red, or yellow?Sentence: _________________________________________________________________d) Look at the number of each colour of vehicle. What does the ratio 4 to 20 show?__________________________________________________________________________e) Write the ratio of silver to total vehicles as a fraction, a decimal, and a percent.silvertotal = ← fraction= ← decimal= ← percentf ) Write the ratio of silver to total vehicles from part e) in lowest terms.88 MHR ● Chapter 2: Ratios, Rates, and Proportional Reasoning
Name: _____________________________________________________Date: ______________2.2 Rates, pages 69–768. Find the unit rates.a) Stephen runs up 300 steps in 6 min. b) $3.60 is the price of 4 L of milk.steps300 steps=6 min 1 min÷ 6300=6 1÷ 6The unit rate is steps/min. The unit rate is .9. The table compares the monthly cost of electricity for a computer and a television.Equipment Time On (h) Monthly Cost ($)Computerand monitor120 4.26Television 180 3.46What is the hourly unit cost for each piece of equipment?Round each answer to the nearest tenth of a cent.Computer:costUnit price = number of hoursTelevision:= 4.26 120 = ?120=To change $ to ¢, multiply by 100.$ × 100 = ¢(answer)The unit price is¢/h.Chapter Review ● MHR 89
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CHAPTER Ratios, Rates, and Proportional Reasoning

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