Question 1122538
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If Mark is 16 years now, he will be 20 years old in 4 years.


Since Mark will be 20 years old in 4 years, Norma will be 10 years old at that time.


Hence, Norma is 10-4 = 6 years old now.


<U>Answer</U>.  Norma is 6 years old now.
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It is a 2-nd grade problem, which can be solved (and, I believe, MUST be solved) without using any equations.



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This my note goes specially to Alan:


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    There is NO an ambiguity in the given formulation.


    As formulated, it ALWAYS means "the age then".


    If the opposite is not pointed directly and explicitly.
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