SOLUTION: The average age of a board of 10 advisors of a company is the same as it was 3 year back on account of the replacement of one of the older advisors by younger men.what is the diffe

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Question 748520: The average age of a board of 10 advisors of a company is the same as it was 3 year back on account of the replacement of one of the older advisors by younger men.what is the difference between older and younger man?
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
The average age of a board of 10 advisors of a company is the same as it was 3
year back on account of the replacement of one of the older advisors by younger men.
what is the difference between older and younger man?
:
Let a = the average age
:
let y = age of the younger man
:
%28%2810a+-+30%29%29%2F10 = %28%289a%2By%29%29%2F10
multiply both sides by 10
10a - 30 = 9a + y
10a - 9a = y + 30
a = y + 30
:
30 years between older and younger man