gistfile1.txt

#!/usr/bin/env ruby

require "rubygems"
require "highline/import"

interval = ask("What time interval?", Integer) { |q| q.default = 15 }
amount = ask("What is the charge?", Integer) { |q| q.default = 1 }
capacity = ask("What is the capacity?", Integer) { |q| q.default = 15 }
average_hours_per_day = ask("Average number of hours per day?", Integer) { |q| q.default = 7 }

per_hour = (amount * interval) * capacity
per_day = per_hour * average_hours_per_day
per_month = per_day * 30
per_year = per_month * 12

puts "Per Hour:\t $#{per_hour.to_s}"
puts "Per Day:\t $#{per_day}"
puts "Per Month:\t $#{per_month}"
puts "Per Year:\t $#{per_year}"