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 49 yr. How old is E? Choose the correct choice from the following answers:
A) 25 yr	B) 40 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,= 49*5= 
<gadget id="calculator">49*5</gadget>
<output>245</output>
245 yr.   So, age of E= 45 yr.   Answer: Option 45yr
<result>C</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 49 yr. How old is E?