Marks brother is five years older than Mark. Their combined ages add up to 23. How old is Mark?

asked Feb 27, 2022 4.2k views

25 votes

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9 votes

Answer:

Explanation:

equation: 5 + a(unknown age) = 23

23 - 5 = 18,

5 + 18 = 23

Therefore Mark is 18 years old

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14 votes

Mark is 9 (and his brother is 14).

Nathan Hagen answered Mar 3, 2022

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