int_quiz_1.9.rb

munsters = { 
  "Herman" => { "age" => 32, "gender" => "male" }, 
  "Lily" => { "age" => 30, "gender" => "female" }, 
  "Grandpa" => { "age" => 402, "gender" => "male" }, 
  "Eddie" => { "age" => 10, "gender" => "male" },
  "Marilyn" => { "age" => 23, "gender" => "female"}
}

munsters.each do |name, info|

case
when (0..18).include?(info["age"])
  info["age_group"] = "kid"
when (19..65).include?(info["age"])
  info["age_group"] = "adult"
else
  info["age_group"] = "senior"
end
end

puts munsters


#OR



munsters.each do |name, details|
  case details["age"]
  when 0...18
    details["age_group"] = "kid"
  when 18...65
    details["age_group"] = "adult"
  else
    details["age_group"] = "senior"
  end
end