Ravi's Science test consists of 120 questions from three sections—i.e., X, Y, and Z. The test has 20 questions from section X, 50 questions from section Y, and 50 questions from section Z. He answered 75% of section X, 50% of section Y, and 40% of section Z correctly. However, Ravi did not pass the test as he got less than 60% of the total marks. In an effort to improve his score, Ravi decided to attempt the remaining unanswered questions in each section and answer them all correctly. What percentage of these remaining questions would he have to answer correctly to pass the test, assuming each question carries 1 mark?