Question 10
John takes a mathematics contest with three parts and 29 questions in total. Part 1: questions 1–12, 4 points per correct answer. Part 2: questions 13–24, 6 points per correct answer. Part 3: questions 24–29, 6 points per correct answer. In every part wrong or blank answers earn 0. John obtains 75% of the score in Part 1, 75% in Part 2 and 40% in Part 3. What is his total score?