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anonymous

  • one year ago

there were 490 altogether in 2 groups. group A consited of only boys and group b constied of only girls. ther were 2 and a half times as many girls as boys. some girls joined group b and foe every 4 boys in group a 32 more boys jioned the group. the total number og girls was then one third the total number of boys. express the number of girls who jioned group b as a fraction of boys who jioned group a

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  1. horsegirl27
    • one year ago
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    I would suggest you just write all the information down and it will make more sense. Like, write what you know. Then, write an equation to help you solve. I would help you with this, but I gtg. Just try writing it out yourself more simply, that often helps. The solving will be easy.

  2. anonymous
    • one year ago
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    i've tried but its too confusing think if someone exlpained it to me i would grasp the idea better

  3. anonymous
    • one year ago
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    a = 1/8 A and b = 1/2 * 1/8 a = a/16 and there are 108 boys at the end

  4. anonymous
    • one year ago
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    could you further explain it some more please?

  5. anonymous
    • one year ago
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    to begin, A = 1/8 A a boys joined A 32/4 = 8, so 8A boys joined the group.so, A = 1/8 A b girls joined B So, now there are B+b = 1/3(9A) = 3A 5/2 A + b = 3A b = 1/2 A b = 1/2 * 1/8 a = a/16 example: A=12 B=30 A/4 = 3, so 3*32 = 96 boys joined A, making 180 boys in all B+b = 108/3 = 36 so, 6 girls joined, or 96/16

  6. anonymous
    • one year ago
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    so how is the number of girls who joined group b expressed as a fraction of boys who joined group a

  7. anonymous
    • one year ago
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    12/16

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