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

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Question 787221: Jamie and Ross are brother and sister. Jamie has the same number of brothers as dusters. Rosa has twice as many brothers and sisters. How many boys and girls are in the family?
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
Jamie and Rosa are brother and sister.
b = no. of boys; g = no. of girls
Jamie has the same number of brothers as dusters.
b - 1 = g
b = g + 1
Rosa has twice as many brothers and sisters.
b = 2(g-1)
b = 2g - 2
How many boys and girls are in the family?
b = b therefore
2g - 2 = g + 1
2g - g = 1 + 2
g = 3 girls in the family
then
b = 3 + 1
b = 4 boys
:
Not sure how many "dusters" were involved in this,
But generally it's the girls that worry about dust isn't it?