A, B, C, D, E, F are the only six families in Indira nagar. A, B, C, D, E and F has 7, 8, 10,13, 6 and 10 members in their familes respectively.
If member from all the six families left their respective families to accommodate themselves in the hostel of IM Luknow, then the average number of members now in each family in Indira nagar is :

Options

A. 8
B. 9
C. 10
D. 13

Answer

A

Explanation

Required average =((7+8+10+13+6+10)/6)-`(6xx1)/6`=8