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0 / 60 seg.
Julie says to her brother Pete: "I have as many sisters as brothers." "Yeah, well," replies Pete: "I've got twice as many sisters as I have brothers." How many sisters and brothers are there?
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4
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N
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3
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3
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3
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Clue
THREE SISTERS AND TWO BROTHERS. THIS CAN BE SOLVED BY SIMPLE DEDUCTION, BUT IF ALGEBRA IS USED LET X BE THE NUMBER OF SISTERS AND Y THE NUMBER OF BROTHERS: X+ 1= 2Y Y+ 1= X THEREFORE, Y + 1+ 1= 2Y SO Y =2 OR X + 1= 2X - 2 SO X = 3
FOUR BROTHERS AND THREE SISTERS. EVERY BOY WILL HAVE 3 BROTHERS AND 3 SISTERS. EVERY GIRL WILL HAVE 4 BROTHERS AND 2 (HALF OF THE NUMBER OF BROTHERS) SISTERS
THERE ARE 4 SISTERS AND 3 BROTHERS. JULIE HAS 3 SISTERS AND 3 BROTHERS, AND PETE HAS 2 BROTHERS AND 4 SISTERS
FOUR DAUGHTERS AND THREE SONS. EACH DAUGHTER HAS 3 SISTERS AND 3 BROTHERS, AND EACH BROTHER HAS 2 BROTHERS AND 4 SISTERS
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