MCQ Practice Mathematics 📖 The average age of 12 students is 20 years. If the age of one more student is included the average decreases by 1, what is th... 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 PreviousThe age of 6 boys of a team led by Karim is 8.5 and if Karim is dropped the average age of the remaining boys will be 7.2. Wh... NextThe average age of three persons is 30 years. If the ratio of three ages is 3 : 5 : 7. What is the age of the youngest person?
