The average age 11 members of a committee are the same as it was 5 years ago, because an old number has been replaced by a younger number. Find how much younger is the new member than the old number?
Options:
A) 20 years B) 21 years C) 18 years D) 55 years E) 30 years
11 * 5= 
<gadget id="calculator">11 * 5</gadget>
<output>55</output>
55 years   Answer:55 years
<result>D</result>
The average age 11 members of a committee are the same as it was 5 years ago, because an old number has been replaced by a younger number. Find how much younger is the new member than the old number?