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28 February, 14:30

In a group of 29 children, there are twice as many boys than girls. How may girls are there?

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Answers (2)
  1. 28 February, 14:59
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    There are (9 and 2/3) girls and (19 and 1/3) boys.
  2. 28 February, 15:08
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    B + g = 29

    b is boys

    g is girls

    also, another equation is

    2g = b

    Plug that equation into the first one, and we get:

    2g + g = 29

    3g = 29

    g = 29/3 = 9.667

    But there can't be 0.667 of a girl, so we have to round down to 9.

    Your answer is 9 girls.
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