naming_question.rb

 1. class Gear
 2    attr_reader :chainring, :cog  # <-------
 3    def initialize(chainring, cog)
 4      @chainring = chainring
 5      @cog       = cog
 6    end
 7 
 8    def ratio
 9      chainring / cog.to_f        # <-------
10    end
11  end