A survey of recent high school graduates regarding literature that they studied during their high school career yielded the following information: 615 read Gone with the Wind, 925 read Moby, 505 read Lord of the Flies, 135 read all three, 25 read none, 121 read only Gone with the Wind, 181 read Gone with the Wind and Lord of the Flies, and 211 read Lord of the Flies and Moby, but not Gone with the Wind. What percent of the recent graduates read exactly one book? Round your answer to the nearest tenth, if necessary.