SOLUTION: Jaime and Rosa are brother and sister. Jaime has the same number of brothers and sisters. Rosa has twice as many brothers as sisters. How many boys and girls are in the family?

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Question 783581: Jaime and Rosa are brother and sister. Jaime has the same number of brothers and sisters. Rosa has twice as many brothers as sisters. How many boys and girls are in the family?
Answer by solver91311(24713) (Show Source):
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Presuming that Jaime is a boy and Rosa is a girl (you never really know these days), then if is the number of boys in the family, is the number of Rosa's brothers and is the number of Jaime's brothers, and if is the number of girls, is the number of Jaime's sisters and is the number of Rosa's sisters.

So if Jaime's brothers equal his sisters:

And if Rosa's brothers are twice the number of her sisters:

Solve the 2X2 system for and by any convenient means.

John

Egw to Beta kai to Sigma
My calculator said it, I believe it, that settles it