Grandpa mick opened a pint of ice cream. He gave his youngest grandchild 1/5 of the ice cream and his middle grandchild 1/4 of the remaining ice cream. Then he gave his oldest grandchild 1/3 of the ice cream that was left after serving the others. Who got the most ice cream? What fraction of the pint of ice cream will be leaf if grandpa mick serves himself the same amount as the second grandchild?