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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