SOLUTION: Four years ago, the average age of A and B was 18 years. At present the average age of A, B And C is 24 years. What would be the age of C after 8 years?

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Question 893186: Four years ago, the average age of A and B was 18 years. At present the average age of A, B And C is 24 years. What would be the age of C after 8 years?
Answer by josgarithmetic(39616) About Me  (Show Source):
You can put this solution on YOUR website!
Four years ago: %28A-4%2BB-4%29%2F2=18
%28A%2BB%29-8=36
%28A%2BB%29=44, the sum of their current ages.

Presently: %28A%2BB%2BC%29%2F3=24
A%2BB%2BC=72
C=72-A-B
C=72-%28A%2BB%29
C=72-44
C=28, present age of C.

Age for C in eight more years:
C%2B8
28%2B8
highlight%2836%29