Twins Margaret and Dana and their friend, Rebecca, were celebrating their tenth birthdays with a party at the beach. The first fun activity was water games. As Chelsea arrived, she observed that 1/3 of the kids were playing with beach balls, 40% were exploring underwater with goggles, and .25 were floating in tubes. The party continued with many games, presents, and the ever-popular cake and ice cream. When the party was over, each kid received a party bag and a balloon to take home. There were even three bags and balloons left for Margaret, Dana, and Rebecca. How many balloons were needed for this birthday beach bash? EXTRA: If the first ten balloons cost one dollar apiece and each additional balloon cost seventy-five cents, how much was spent on