Five years ago, the average age of A, B, C and D was 40 yr. with E joining them now, the average of all the five is 49 yr. How old is E?  Pick
A) 25 yr B) 40 yr C) 45yr D) 65 yr E) NOne
Solution:   Total present age of A, B, C and D,   = (40*4)+(4*5)= 
<gadget id="calculator">(40*4)+(4*5)</gadget>
<output>180</output>
180 yr;   Total age present age of A, B, C, D and E,= 49*5= 
<gadget id="calculator">49*5</gadget>
<output>245</output>
245 yr.   So, age of E= 65 yr.   Answer: Option 65 yr
<result>D</result>
Five years ago, the average age of A, B, C and D was 40 yr. with E joining them now, the average of all the five is 49 yr. How old is E?