Six years ago, the average of ages of Ravi, Mohan and Govind was 32 years. If Shyam joins them now, the average of the ages of all four of them is 36 years. The present age of Shyam is?
Answer & explanation
Correct answer: option 4
Six years ago average of Ravi, Mohan and Govind = 32 years
Present average of Ravi, Mohan and Govind = 32 + 6 = 38 years
Total present age of Ravi, Mohan and Govind = 38 × 3 = 114 years
Total present age of Ravi, Mohan, Govind and Shyam = 36 × 4 = 144 years
Hence,
Age of Shyam = 144 - 144 = 30 years