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anonymous

  • 5 years ago

there are 30 students in a class, the ratio for boys and girls are 3:8, how many girls are there??

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  1. dumbcow
    • 5 years ago
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    8/11 = x/30 cross multiply

  2. myininaya
    • 5 years ago
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    or... b=boys g=girls b+g=30 and b/g=3/8 assuming its boys to girls and not girls to boys you have two equations and two unknowns have fun!

  3. anonymous
    • 5 years ago
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    what? this makes no sense lol there are decimals in the answers! haha

  4. myininaya
    • 5 years ago
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    i know i see this you have 240/11 girls lol

  5. anonymous
    • 5 years ago
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    don't you think something is wrong with the data in the question? 30 is NOT divisible by 11

  6. anonymous
    • 5 years ago
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    all i know is i wish my classes had a boy to girl ratio of 3:8 *wink*

  7. anonymous
    • 5 years ago
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    correct the question to something like "the ratio of boys and girls IS 3:7" then you would get an answer.

  8. anonymous
    • 5 years ago
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    240/11 girls....1 girl is a midget...she counts as 0.818 of a girl...therefore, 21 normal girls, 1 midget girl, 8 boys....problem solved. =D

  9. myininaya
    • 5 years ago
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    there would be a midget boy who counts .1818

  10. myininaya
    • 5 years ago
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    girls are worthed more than boys lol

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