SOLUTION: i am twice as old as you were when i was of your age. sum of your and my age is 42 yrs. calculate my age ?

Question 611089: i am twice as old as you were when i was of your age. sum of your and my age is 42 yrs. calculate my age ?
Found 2 solutions by radh, josmiceli:
Answer by radh(108) (Show Source): You can put this solution on YOUR website!
Let's write this mathematically.
I am twice as old as you were when I was of your age. (2x) Sum of your and my age is 42 years. (+x)

That can simplify to:
Divide both sides by 3 to get: .
Since your age is 2x, we substitute our value for x in.
Your age is 28.
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = my age now
Let = your age now
The difference in our ages will always be the same
That difference is ( I am older )
I was your age years ago, so I was
years old then.
You were years old then.
given:
(1)
(2)
-----------------------
(1)
(1)
(1)
By substitution:
(2)
(2)
(2)
(2)
and, since
(2)
(2)
(2)
I am 24

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