SOLUTION: The average age of man and son is 40years. The ratio of their ages is 11:5 respectively . What is the son's age ?

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Question 884689: The average age of man and son is 40years. The ratio of their ages is 11:5 respectively . What is the son's age ?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
m%2Fs+=+11%2F5 , m = (11/5)s
%28%2811%2F5%29s+%2B+s%29%2F2+=+40
(16/5)s = 80
s = 80(5/16)= 25, the son's age
And...
%2825%2B55%29%2F2+=+40