class Fruit
  attr_accessor :color, :type
  attr_reader :total_price
  def initialize(color, type, amount, unit_price)
    @color = color
    @type = type
    @total_price = amount * unit_price
  end

  def to_s
  	"Color: #{self.color}; Type: #{self.type}; Total price: #{self.total_price}"
  end
end

pear = Fruit.new 'green', :pear, 3, 10
puts pear