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4 November, 23:22

Jimmy's sister is twice as old as he is. His big brother is 5 years older than he is. The sum of their three ages is 29. How old is Jimmy's brother?

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  1. 4 November, 23:42
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    11 years old

    Step-by-step explanation:

    Let Jimmy's age be represented as x. His big brother's age is x+5 and his sister's age is 2x. Adding these gives us 4x+5=29. Solving for x gives us 6. His brother's age is 6+5=11.
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