Risolvere Problemi Con Percentuali 3

Help us caption and translate this video on Amara.org: http://www.amara.org/en/v/B2tx/ Traduzione in Italiano del video Solving Percent Problems 3 http://www.youtube.com/watch?v=DAikW24_O0A&feature=player_embedded http://www.khanacademy.org/math/arithmetic/percents/v/solving-percent-problems-3