Compare your answers.

    1. Using the graph above, calculate the average speed of the moped.




       
    2. Convert the moped's average speed to

      • metres per minute (1 kilometre = 1000 metres)
      • miles per hour (1 mile = 1.6 kilometres)

      In metres per minute:
      Let x = distance in metres

      5000 metres per hour

      In miles per hour:
      Let x = distance in miles

      3.125 miles per hour

      Convert hours to minutes.
      1 hour = 60 minutes

      83.3 metres per minute



       

  2. Graphs representing the fuel consumption of two different motorcycles are provided.

    1. Determine the average fuel consumption of each motorcycle.

    2. Which motorcycle uses less fuel? Explain.
       


      Fuel consumption for #1. Fuel consumption for #2.

      Rate of consumption is 20 mi/gal.
      For every 20 miles travelled one gallon used.

      Rate of consumption is 25 mi/gal.
      For every 25 miles travelled one gallon used.

      Motorcycle #2 uses less fuel because it travels farther using the same amount of fuel.

 

Understanding rates allows you to make sense of how fast one quantity changes in relation to another. Lesson 5.2 introduces the application of rates and proportions when working with scale factors and scale diagrams.

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