Ruby, value bucketing, beautify code

Question

So I have this code:

def self.age_to_bucket(age)
  age = age.to_i

  if age >= 0 && age <= 12
    1
  elsif age >= 13 && age <= 17
          


        

Answer 1

def self.age_to_bucket age
  case age=age.to_i
    when  0..12 then 1
    when 13..17 then 2
    when 18..24 then 3
    when 25..29 then 4
    when 30..34 then 5
    when 35..39 then 6
    when 40..49 then 7
    when 50..64 then 8
    else age >= 65 ? 9 : 0
  end
end