MCQ Practice Mathematics 📖 If 36 students in a class are female and the ratio of female students to male students is 9 : 11, what percentage of the clas... Favorite Practice Add to Book Explanation & Answer Detailed explanations and answers are restricted. Unlock full access by logging in to your account. 🔒 Unlock the detailed explanation and answers Log In / Sign Up PreviousFor a certain student the average of five test scores is 83. If four of the scores are 81, 79, 85 and 90. What is the score o... NextIf a : b = 4 : 7 and b : c = 5 : 6, then a : b : c =?