five o'clock
of them right , '' returned the senator 's son . `` But maybe I did n't get above fifty or sixty per cent . '' The afternoon questions seemed to be much harder than those of the morning . The students were given until five o'clock to pass in their afternoon papers , and never did Dave and Roger work harder than they did during the final hour . One question in particular bothered our hero a great deal . But at almost the last minute the answer to it came like an inspiration , and he dashed it down . This question proved a poser for the senator 's son , and he passed in his paper without attempting to put down a solution .