MCQ Practice Mathematics 📖 For 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... 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 PreviousCompany A owns 40% of the stock in the XYZ Corporation. Company B owns 15000 shares. Company C owns rest of the shares. If co... NextIf 36 students in a class are female and the ratio of female students to male students is 9 : 11, what percentage of the clas...