Average age of 9 members of a club is 29 years. If 2 more persons with the average age of 40 years have become the members of the club, find average age of all the 11 members. Choose the correct choice from the following options.
A) 15	B) 31	C) 77	D) 99	E) 22
Average age of 9 members = 29 years; Excess age of 2 new members = (40 - 29) × 2 = 22 years   Therefore, Increase in the average age on inclusion of 2 new members = 22112211 = 2 years   Therefore, Average age of 11 members = 29 + 2= 
<gadget id="calculator">29 + 2</gadget>
<output>31</output>
31 years   Answer:31
<result>B</result>
Average age of 9 members of a club is 29 years. If 2 more persons with the average age of 40 years have become the members of the club, find average age of all the 11 members.