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anonymous

  • one year ago

A group of adults and students went on a class trip to Washington, DC. The number of male students was 1 more than 7 times the number of adults. The number of female students was half the number of male students. If the total number of people who went on the trip is 82, find the numbers of male students and female students.

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  1. CoconutJJ
    • one year ago
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    Let the Number of Adults = X Represent the number of male students in terms of x

  2. CoconutJJ
    • one year ago
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    @mnc1021

  3. anonymous
    • one year ago
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    i dont understand @CoconutJJ

  4. CoconutJJ
    • one year ago
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    "number of male students was 1 more than 7 times the number of adults" - How would you write this a expression.

  5. anonymous
    • one year ago
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    7x+1 ?

  6. CoconutJJ
    • one year ago
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    GOOD!

  7. CoconutJJ
    • one year ago
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    "The number of female students was half the number of male students." - Now we have an expression for the number of male students, do the samething for female

  8. anonymous
    • one year ago
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    is it 7x+1/2 ?

  9. CoconutJJ
    • one year ago
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    YAY!

  10. CoconutJJ
    • one year ago
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    "If the total number of people who went on the trip is 82"- We know the number of adults which is X and also have expressions for male and female... so what do we do now ?

  11. anonymous
    • one year ago
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    this is where i am stuck, do i add them both together and them set it equal to 82? i get stuck here

  12. CoconutJJ
    • one year ago
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    YAY!

  13. anonymous
    • one year ago
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    would the equation look like this: 7x+1+7x+1/2=82

  14. CoconutJJ
    • one year ago
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    Where did the Adults go?

  15. anonymous
    • one year ago
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    aren't they the x

  16. CoconutJJ
    • one year ago
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    yes, but they're not aliens... they're human.. better add them to the equation

  17. anonymous
    • one year ago
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    haahaha i don't know where to put the x though

  18. CoconutJJ
    • one year ago
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    X+(1+7x)+(1+7x)/2

  19. CoconutJJ
    • one year ago
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    TA DA!

  20. CoconutJJ
    • one year ago
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    Can you solve for x given the other side is 82

  21. CoconutJJ
    • one year ago
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    |dw:1435958089976:dw|

  22. anonymous
    • one year ago
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    ok lemme try solving that i don't think idid it right, i got 7

  23. CoconutJJ
    • one year ago
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    lemme check.

  24. CoconutJJ
    • one year ago
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    YAY!

  25. CoconutJJ
    • one year ago
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    There are 7 adults, however they ask the number of male and female students. We already have the 2 equations

  26. anonymous
    • one year ago
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    so i plug 7 into each individual equation?

  27. CoconutJJ
    • one year ago
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    YES!

  28. anonymous
    • one year ago
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    ohh ok ok gotcha. thank you so much!!!!!!!

  29. anonymous
    • one year ago
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    so the number of male students is 50, and female is 25

  30. anonymous
    • one year ago
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    but that doesn't add up to 82, where did i go wrong here

  31. anonymous
    • one year ago
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    @CoconutJJ

  32. CoconutJJ
    • one year ago
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    You're treating adults as aliens again...

  33. anonymous
    • one year ago
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    what do you mean?

  34. CoconutJJ
    • one year ago
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    50+25+7 humans

  35. anonymous
    • one year ago
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    oohhh ok ok thank you!!! ....again ahaha

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