refactor case

Case

 def set_pay_plan
    progress = self.progress
    case progress
      when 0.01..0.74
        self.pay_plan = "s-20"
      when 0.75..0.84
        self.pay_plan = "s-225"
      when 0.85..1.05
        self.pay_plan = "s-25"
      when 1.06..1.15
        self.pay_plan = "s-2625"
      when 1.16..1.25
        self.pay_plan = "s-275"
      when 1.26..1.35
        self.pay_plan = "s-2875"
      when 1.36..1.49
        self.pay_plan = "s-30"
      when 1.5..1.99
        self.pay_plan = "s-3125"
      when 2.0..5.00
        self.pay_plan = "s-3375"
    end
  end
  
  
  Refactor 
def set_pay_plan
 PAY_PLANS = [
	 [0.01..0.74, "s-20"],
	 [0.75..0.84, "s-225"],
 ]

 self.pay_plan = PAY_PLANS.find{ |range, name| range.include?(progress) }.last
end