The average age of a group of people were 60 person aged 40 exits the group and average increases to 65. How many people were in the group initally?	Answers
A) 3 B) 4 C) 5 D) 6 E) 8
Let n be the number of people in the group   the new average;   65=60n-40/(n-1) =&gt; 65n-65=60n-40 =&gt; 5n=25 =&gt; n=5   Answer: 5
<result>C</result>
The average age of a group of people were 60 person aged 40 exits the group and average increases to 65. How many people were in the group initally?