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anonymous

  • one year ago

If it takes 3 days for 10 workers to finish building one house, how may days will it take 15 workers to finish 4 houses?

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  1. anonymous
    • one year ago
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    i hate word problems

  2. anonymous
    • one year ago
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    me too =(

  3. anonymous
    • one year ago
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    we can find the unit rate per worker i guess

  4. anonymous
    • one year ago
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    hows that? all i know is, is that they build 1 house in 3 days so 1/3

  5. anonymous
    • one year ago
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    ten workers can build one third of a house per day

  6. anonymous
    • one year ago
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    so each worker builds \(\frac{1}{30}\) of a house per day that is the unit rate per worker

  7. anonymous
    • one year ago
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    yea

  8. anonymous
    • one year ago
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    how did u get that/. and y do u divide or multiply?

  9. anonymous
    • one year ago
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    i divided \(\frac{1}{3}\) by \(10\) to get \(\frac{1}{30}\)

  10. anonymous
    • one year ago
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    but why do u divide instead of multiplying?

  11. anonymous
    • one year ago
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    ok lets go slow

  12. anonymous
    • one year ago
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    k

  13. anonymous
    • one year ago
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    you already said the \(\frac{1}{3}\) of a house per day right?

  14. anonymous
    • one year ago
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    yes

  15. anonymous
    • one year ago
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    but that was not for one worker, that is for 10 workers working together

  16. anonymous
    • one year ago
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    ohhhhhhh i see so to find how much they get done PER WORKER we have to divide!!

  17. anonymous
    • one year ago
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    so each single worker does one -tenth of that work i.e. \[\frac{1}{3}\times \frac{1}{10}=\frac{1}{30}\]

  18. anonymous
    • one year ago
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    right divide by 10 or multiply by 1/10 same thing

  19. anonymous
    • one year ago
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    we are still not done though

  20. anonymous
    • one year ago
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    ohhh ok

  21. anonymous
    • one year ago
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    now you have 15 workers right?

  22. anonymous
    • one year ago
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    yea so multiply by 15 to see how much work 15 workers can do

  23. anonymous
    • one year ago
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    exactly \[15\times \frac{1}{30}=?\]

  24. anonymous
    • one year ago
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    2/15

  25. anonymous
    • one year ago
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    hmm no careful

  26. anonymous
    • one year ago
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    what is fifteen times one thirtieth?

  27. anonymous
    • one year ago
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    i simpilfied

  28. anonymous
    • one year ago
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    not correctly though

  29. anonymous
    • one year ago
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    15/30= 1=2

  30. anonymous
    • one year ago
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    oops 1/2

  31. anonymous
    • one year ago
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    1/2 right

  32. anonymous
    • one year ago
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    yea

  33. anonymous
    • one year ago
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    they build half a house per day one how in two days

  34. anonymous
    • one year ago
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    how long before they build 4 houses?

  35. anonymous
    • one year ago
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    so do 1/2 * 4?

  36. anonymous
    • one year ago
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    again lets go slow

  37. anonymous
    • one year ago
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    kk

  38. anonymous
    • one year ago
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    they build half a house per day right?

  39. anonymous
    • one year ago
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    yes

  40. anonymous
    • one year ago
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    so one house takes how long to build?

  41. anonymous
    • one year ago
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    1 house every 2 days

  42. anonymous
    • one year ago
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    right

  43. anonymous
    • one year ago
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    if it takes two days to build one house, how long to build four?

  44. anonymous
    • one year ago
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    proportions

  45. anonymous
    • one year ago
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    ?

  46. anonymous
    • one year ago
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    |dw:1436380956032:dw|

  47. anonymous
    • one year ago
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    one house in two days two houses in four days three houses in six days four houses in eight days

  48. anonymous
    • one year ago
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    or your way

  49. anonymous
    • one year ago
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    or \[\frac{1}{2}T=4\\ T=4\times 2\]

  50. anonymous
    • one year ago
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    ahhhhh i c.... nice thank you satellite <3333

  51. anonymous
    • one year ago
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    any way you choose

  52. anonymous
    • one year ago
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    yw

  53. anonymous
    • one year ago
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    even though you are not my moma's boyfriend

  54. anonymous
    • one year ago
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    kekekeke it's an inside joke between me and my friends

  55. anonymous
    • one year ago
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    oooh

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