SOLUTION: The total of the ages of 3 people is 80 years. what was the total of their ages 3 years ago?

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Question 762997: The total of the ages of 3 people is 80 years. what was the total of their ages 3 years ago?
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
The total of the ages of 3 people is 80 years.
what was the total of their ages 3 years ago?
:
a + b + c = 80
(a-3) + (b-3) + (c-3)
a+b+c - 9 = ?
replace a+b+c with 80
80 - 9 = 71 is the total 3 yrs ago