Correct option is B
Given:
- Five years ago, the average age of Puneet and Amrita was 15 years.
- Today, the average age of Puneet, Amrita, and Renu is 20 years.
Formula Used:
1. Average age formula: Sum of ages = Average age × Number of people
2. To find Renu's current age and future age: Renu's age after 12 years = Current age of Renu + 12
Solution:
1. Calculate the sum of ages of Puneet and Amrita five years ago: Sum of ages of Puneet and Amrita (5 years ago) = 15 × 2 = 30
2. Their current ages sum (adding 5 years to each): Current sum of ages of Puneet and Amrita = 30 + 2 × 5 = 40
3. Calculate the current sum of ages of Puneet, Amrita, and Renu: Sum of ages of Puneet, Amrita, and Renu (today) = 20 × 3 = 60
4. Find Renu’s current age: Renu's current age = 60 - 40 = 20
5. Calculate Renu's age after 12 years: Renu's age after 12 years = 20 + 12 = 32 Answer: (b) 32 years
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