Radha and Mohan's average age is 75 years. The average age of Radha, Mohan and Jay is 55 years. What is the age of Jay?
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → 15 years
An average multiplied by the number of people gives their total age. Jay’s age is the total for all three minus the total for Radha and Mohan.
Radha + Mohan \(=2\times75=150\) years
Radha + Mohan + Jay \(=3\times55=165\) years
Jay \(=165-150=15\) years