SOLUTION: Question: Albert is twice as old as Betty. Five years ago, Albert was twice as old as Betty. Find their present ages.

Question 978392: Question:
Albert is twice as old as Betty. Five years ago, Albert was twice as old as Betty. Find their present ages.
Answer by ikleyn(52847)   (Show Source): You can put this solution on YOUR website!

Hello, it looks like your condition is wrong.

Indeed, let a be the Albert's age now, and let b be the Betti's age now.

Then you have an equation

a = 2b,                         (1)

according to the condition.

Five years ago Albert's age was (a-5) and Betti's age was (b-5).
So, you have the second equation

a - 5 = 2*(b-5),           (2)

according to the condition.

Now, simplify the second equation:

a - 5 = 2b - 10,
a = 2b - 5.

It contradicts to the equation (1).

>>> Be more attentive when submit your problems !! <<<

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