Can You Solve?

in math •  7 years ago 

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Have fun

math question
7 years ago by

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      ·  7 years ago 

    At first
    Number of guests= 420
    Number of adults= 420 x 0.6 = 252
    Number of Children= 420 - 252 (adults) = 168
    Children Girls= (1/8) of the children = 1/8 x 168 = 21
    Children Boys= 168 -21= 147

    After some boys left
    Adults were 70% already (still 252 adults); let Z be the new number of guests after some boys left
    New number of guests =(252/Z) x (0.7) = 360
    So number of boys that left= 420-360= 60

    A. 60 boys left

    So from the original number of boys (147) minus the number of boys who left (60) equals 87
    87- 21 (number of girls) = 66

    B. There are 66 more boys than girls

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      ·  7 years ago 

    I wish I could but maths is my enemy

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      [-]
        ·  7 years ago 

      A. 10%?
      B. 15%

      LMAO I don't know, do you show the formula in this after the contest? I'm quite curious with the answer.

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          ·  7 years ago 

        image.jpeg

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          ·  7 years ago 

        Ahhhh so that's how it is... Thank you :)

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            ·  7 years ago 

          yah.. let us know the answer ! haha

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              ·  7 years ago 

            image.jpeg

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