Question 664295: how to write an equation of three people ages 12, 56 and 60 when their ages add up to 150 how old will the be?
Answer by vleith(2983)   (Show Source):
You can put this solution on YOUR website! The three people start with a total age of
 so some years down the road their total age will go above 150. How may years fro now is that?
Let's assume that that happens in x years.
At that time, the three people will be
{{12+x}}},  and  years old
So in 7 years they will total to 149. in 7 years, they are 19, 63 and 67
At that point, whichever person has the earliest birthday will put them over the top (assumes that 2 or kmore of them are not born on the same day).
That makes three possible answers
(20, 63, 67) , (19,64,67) or (19,63,68)
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