Five years ago, the average age of A, B, C and D was 45 yr. with E joining them now, the average of all the five is 52 yr. How old is E?
Choose the correct answer.
A) 25 yr  B) 62 yr  C) 45yr  D) 64 yr  E) NOne
Solution:   Total present age of A, B, C and D,   = (45*4)+(4*5)= 
<gadget id="calculator">(45*4)+(4*5)</gadget>
<output>200</output>
200 yr;   Total age present age of A, B, C, D and E,= 52*5 = 262 yr.   So, age of E = 62 yr.   Answer: Option 62 yr
<result>B</result>
Five years ago, the average age of A, B, C and D was 45 yr. with E joining them now, the average of all the five is 52 yr. How old is E?