Correct Answer - Option 2 : 28 year
Given
The average age of 5 members is 46
One new member is joined in the family due to this average age is decreased by 3
Formula used
Average = total sum of observations/number of observations
Calculation
Average age of 5 members is 46
⇒ Sum of age of family members = 46 × 5 = 230
According to question
⇒ After joining new member now total members is 6
⇒ Sum of age of 6 family member = 6 × 43
⇒ 258
∴ The age of new family member (258 - 230) = 28 year.
