Six years ago, the average age of Ravi, Mohan and Govind was 32 years. Shyam joins them now, and the average age of all four of them today is 36 years. What is the present age of Shyam?
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → 30 years
In six years each of the three has grown 6 years older, so their total rises by \(3\times6\). Shyam’s age is what is left of today’s total of four.
Total of the three, six years ago \(=3\times32=96\) years
Total of the three today \(=96+18=114\) years
Total of the four today \(=4\times36=144\) years
Shyam’s age \(=144-114=30\) years