Jeremy wants to start a 7th-grade summer reading club at his middle school. he surveyed thirty 7th-grade students at the community pool. he asked each student how many books they had read during the month of july. he obtained these results: 8, 5, 0, 1, 2, 3, 6, 3, 0, 4, 7, 4, 3, 3, 5, 2, 1, 3, 2, 1, 0, 4, 1, 2, 4, 2, 3, 7, 6, 0 what is the ratio of the total number of students who did not read books to the total number of students surveyed?