Jan 8,2011

Five years ago, the average of Raja and Rani’s ages was 20 yrs. Now the average
age of Raja, Rani and Rama is 30 yrs. What will be Rama’s age 10 yrs hence?
Total age of Raja and Rani 5 years ago = 40
Total age of Raja and Rani now = 40 + 5 + 5 = 50
Total age of Raja, Rani and Rama now = 90
Rama’s age now = 90 – 50 = 40
Rama’s age after 10 years = 50