The average age of Ashok and his father is 45 years. If the ages of the father and grandfather of Ashok are respectively two and three times that of Ashok, then the age of Ashok’s grandfather is?
Question and options
The average age of Ashok and his father is 45 years. If the ages of the father and grandfather of Ashok are respectively two and three times that of Ashok, then the age of Ashok’s grandfather is?
- 75 years
- 90 years
- 81 years
- 84 years
Answer and explanation
Correct answer: B - 90 years
Ashok = a and father = 2a, so (a + 2a)/2 = 45, giving a = 30. Grandfather = 3a = 90 years.
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CUSAT CAT Five-Year LL.B.
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