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 48 yr. How old is E?	Choose the correct choice from the following choices: 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,= 48*5= 
<gadget id="calculator">48*5</gadget>
<output>240</output>
240 yr.   So, age of E= 40 yr.   Answer: Option 40 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 48 yr. How old is E?