SOLUTION: Maria is 12 years older than Mark. Last year she was twice as old as Mark. How old are they now?

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Question 1135480: Maria is 12 years older than Mark. Last year she was twice as old as Mark. How old are they now?
Found 2 solutions by ikleyn, josgarithmetic:
Answer by ikleyn(52794)   (Show Source):
You can put this solution on YOUR website!
.

Since Maria is 12 years older than Mark,

last year she was 12 years older than Mark AND twice as old as Mark     (both at the same time !)

Then it is clear that the last year Maria was 24 years old, while Mark was 12 years old at that time.

Now add 1 year to 24 and 12, and you will get the ANSWER.

    Solved (or almost solved, leaving a small gap for you to fill it . . . )

Answer by josgarithmetic(39618)   (Show Source):
You can put this solution on YOUR website!
Maria, y+12
Mark, y

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Maria, 25
Mark, 13