Question

Average age of ten learning yoga is $32$ yrs. When the age of their instructor is added, the average age becomes $34$ yrs. The age of their instructor is

• A. $54$
• B. $52$
• C. $46$
• D. $56$

Answer 1

The correct option is A $54$

Average age of ten person learning yoga $=32$ years
Average age of $11$ person including instructor $=34$ years
Age of instructor
$11\times 34-10\times 32$
$\Rightarrow 374-320=54years$.