Multiple choice

Joe is 6 years older than his sister Marie. If J represents the present age of Joe, which of the following expressions will give Marie's age 8 years ago?

  1. J - 14

  2. J - 6

  3. J - 2

  4. J + 14
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A Correct answer
Explanation

Joe's present age is J. Marie's present age is J - 6. Eight years ago, Marie's age was (J - 6) - 8, which simplifies to J - 14.

AI explanation

Since Joe is 6 years older than Marie, Marie's present age is J - 6. To find her age 8 years ago, subtract 8 from her present age to get (J - 6) - 8. This simplifies to the expression J - 14.

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