blood_tests_price.rb

require 'json'
require 'open-uri'

url = 'https://www.theranos.com/api/tests'
resp = open(url).read

json_tests = JSON.parse(resp)
all_tests_price = 0
json_tests.each do |x|
	all_tests_price += x["TheranosPrice"].to_f
end

p "$#{all_tests_price} for #{json_tests.count} tests."