Sarah is twice as old as her youngest brother if the difference between their ages is 15 years how old is her youngest brother

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asked Jun 2, 2017 97.2k views

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Combatdave · Answer 1 · 2017-06-07T01:37:03+0000

He is 15 years old.
You would set up a system of equations
S = Sarah
Y = Youngest brother

S = 2Y
S-Y= 15

Substitute 2Y for S
So 2Y-Y= 15
Y= 15
and that's your answer :-)

Sarah is twice as old as her youngest brother if the difference between their ages is 15 years how old is her youngest brother

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