SOLUTION: five year ago the average age of A.B.C and D was 45 year. with E joining them . the average of all the five is 49 year .the age E is.

Algebra ->  Customizable Word Problem Solvers  -> Age -> SOLUTION: five year ago the average age of A.B.C and D was 45 year. with E joining them . the average of all the five is 49 year .the age E is.      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 1001891: five year ago the average age of A.B.C and D was 45 year. with E joining them . the average of all the five is 49 year .the age E is.
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
five year ago the average age of A.B.C and D was 45 year.
Find the total of their ages five years ago
45 * 4 = 180
:
with E joining them . the average of all the five is 49 year .the age E is.
All 4 of them aged 5 yrs, therefore, their total increased by 20 yrs
Now the their total ages is 200
%28%28200%2BE%29%29%2F5 = 49
200 + E = 5(49)
E = 245 - 200
E = 45 yrs old