Question 1
The average age of 4 people is 31. If Harsha (age 31) leaves and a new person joins, the average becomes 29. Find the age of the new person.
Initial total = 31 × 4 = 124
After Harsha leaves: 124 - 31 = 93
New total = 29 × 4 = 116
New person's age = 116 - (93) = 23
After Harsha leaves: 124 - 31 = 93
New total = 29 × 4 = 116
New person's age = 116 - (93) = 23