Question

The average age of Tom's 5 family members excluding Tom is 35. Tom is 5 years old, average age of his family including him is .

• A. $30$ years
• B. $25$ years
• C. $15$ years

Answer 1

The correct option is A $30$ years

As per the question, the average age of $5$ family members is $35$.

Average age of Tom's family including Tom's age is

$\Rightarrow \frac{(5\times 35)+(1\times 5)}{5+1}$

$=\frac{175+5}{6}=30$

$\therefore$ Average age of Tom's family including Tom's age is $30$ years.