SOLUTION: Paul will be 20 years old in 3 years. His sister will be 5 years older in 2 years. How old is paul's sister now?

Question 1046941: Paul will be 20 years old in 3 years. His sister will be 5 years older in 2 years. How old is paul's sister now?

Found 2 solutions by josgarithmetic, ikleyn:
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
Paul age now, p
Sister age now, s
------------right now, p=17.

His sister will be 5 years older in 2 years.
Older than what? 20?
Answer by ikleyn(52786) (Show Source): You can put this solution on YOUR website!
.
I'd classified this formulation as incorrect.

It is not a way to formulate math problems.

"His sister will be 5 years older in 2 years." - Older than who? older than who and when?

It is a "bad style formulation". There is NO PLACE for such formulations in math.

It is seen from this post that the author is unfamiliar on how the typical age problems are formulated.

Very bad impression.

And don't mix Math (school math, I mean) with puzzles.

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