Question : After replacing an old member with a new member. It was found that the average age of five members of a club is the same as it was three years ago. The difference between the ages of the replaced and the new members is:
Option 1: 2 years
Option 2: 4 years
Option 3: 8 years
Option 4: 15 years
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Correct Answer: 15 years
Solution : The total age difference of the group = number of members × change in average age = 5 × 3 = 15 As the average remains the same, the required difference is 15 years. Hence, the correct answer is 15 years.
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Question : The current ages of Sudhir and Ashish are in the ratio 5 : 7. Twelve years ago, the ratio of their ages was 1 : 2. What will be the age of Sudhir five years from now?
Question : The average age of 30 students in a class is 14 years, 4 months. After the admission of five new students in the class, the average becomes 13 years and 9 months. The youngest of the five new students is 9 years and 11 months old. The average age of the remaining four new
Question : Six years ago, the ratio of ages of A to B was 7 : 5. 4 years from now, the ratio of their ages will be 11 : 9. What is A’s age at present?
Question : Eight years ago, the ratio of the ages of A and B was 5 : 4. The ratio of their present ages is 6 : 5. What will be the sum (in years) of the ages of A and B 7 years from now?
Question : Direction: Two years ago, Aadhya was three times as old as his son, and two years hence, twice her age will be equal to five times that of her son. Find Aadhya's present age.
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