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Sarah's age is 30 years right now. Her youngest brother's age is 15 years. --- Algebraically, this results from the equations where S is Sarah's age, x her brother's age : S=2x and S-x=15, where substitution provides 2x-x = 15 and x = 15.

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14y ago
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14y ago

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Q: Sarah is twice as old as his youngest brother If the difference between their ages is 15 years How old is her youngest brother?
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