The average age of a group of 5 members is 20 years.
The average age of a group of 5 members is 20 years. Two years later, a new member joins the group. The average age of the group becomes 24 years. What is the age of the new member ?
Answer/Solution
34 years
Steps/Work
The average age of the 5 members is 20 years
=> The sum of the ages of the 5 members is 20*5 = 100 years
Once the new member joins, the average age becomes 24 years.
Let the age of the new member be x.
Then (110+x)/6 = 24
=> x = 34 years
Answer D
=> The sum of the ages of the 5 members is 20*5 = 100 years
Once the new member joins, the average age becomes 24 years.
Let the age of the new member be x.
Then (110+x)/6 = 24
=> x = 34 years
Answer D