Problema a Parole Su Due Biciclette Che Si Incontrano

Help us caption and translate this video on Amara.org: http://www.amara.org/en/v/B2wW/ Traduzione in Italiano del video Two Passing Bicycles Word Problem http://www.youtube.com/watch?v=Nx4Xk5S4HQA http://www.khanacademy.org/video/two-passing-bicycles-word-problem?playlist=Algebra Help us caption & translate this video! http://amara.org/v/B2wW/