Exams › IBPS PO › Quantitative Aptitude

The average age of A and B is 60 years, and the difference between the ages of A and B is 30 years, where A > B. If the age of C is \(\frac{4}{5}\) of B's age, then find the age of C (in years).

1. 36
2. 24
3. 15
4. 10

Correct answer: 36

Solution

If the average of A and B is 60, then A + B = 120. Their difference is 30, so A = 75 and B = 45. Therefore, C = 4/5 of 45 = 36.

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