1. Calculate the weighted averages for two additional used carsusing the weights given in the table below.

	New weights		Car 4 Ratings	Car 5 Ratings
Reliability	5		7	6
Gas Mileage	6		5	7
Interior Features/Comfort	10		8	7
Cargo Space	4		6	8

Make sure that you fill in each answer area before checking"How Did I Do?".

1. Weighted average for Car 4:  
2. Weighted average for Car 5:   

• In your weighted average equations in the problem above, howmany total weights are used?
  
  
  
• For each category, what percent of the total weights arerepresented by the category weights? Enter your answers in thetable.
  

  	New Weights as a Percentage of TotalWeights
  Reliability	%
  Gas Mileage	%
  Interior Features/Comfort	%
  Cargo Space	%

  
  
• In the tables below, multiply each category’s percentage weightby its rating, and add up the four amounts.
  

  	Percentage Weights (written as a decimal)		Car 4 Ratings
  Reliability		×	7	=
  Gas Mileage		×	5	=
  Interior Features/Comfort		×	8	=
  Cargo Space		×	6	=
  Total

  
  
  

  	Percentage Weights (written as a decimal)		Car 5 Ratings
  Reliability		×	6	=
  Gas Mileage		×	7	=
  Interior Features/Comfort		×	7	=
  Cargo Space		×	8	=
  Total

  
  
• Write an equation for the weighted average using the percentageweights as decimals. Use the following variables to represent theindividual rating in each category: R= Reliability; G= Gas Mileage;I= Interior Features/Comfort; C= Cargo Space.
  
  Weighted average =