Question 767293
<pre>
Average of n values is nothing but the sum of the n values divided by n.
Therefore, if the average of n values is A, the sum of the n values nothing but
n*A.

Average age of 10 people is 35.
Therefore, the total age of the 10 people is = 35*10 = 350.
(Note that you don't really need to know the age of each person to solve this
problem - since you know the average)
After the 11th person enters, total age = total age of the 10 people + age of the
11th person = 350 + 32 = 382.
Now the room has 11 people with a total age of 382. 
So the new average age is
{{{382/11 = 34.727}}}

Hope you got it :)