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aaddiittii

150 workers were engaged to finish a job in a certain number of days. 4 workers dropped out on second day, 4 more workers dropped out on third day and so on. It took 8 more days to finish the work. Find the number of days in which the work was completed.

  • one year ago
  • one year ago

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  1. DLS
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    Did you try it?

    • one year ago
  2. aaddiittii
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    I did try it, honestly! but, i'm just not getting the right idea about how to do it! :'(

    • one year ago
  3. DLS
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    Okay, Let work was to be finished in n days and a labour works K hours per day/one day. Then what is the numerical value or required human hours for the work to be done?

    • one year ago
  4. aaddiittii
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    Hm.. the no. of workers x time taken by all of them here - 150x

    • one year ago
  5. DLS
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    no..i want in variable terms,try gain

    • one year ago
  6. aaddiittii
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    nK .. ?

    • one year ago
  7. DLS
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    150nK

    • one year ago
  8. aaddiittii
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    Eh? :(

    • one year ago
  9. DLS
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    gt it?

    • one year ago
  10. DLS
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    did you get it?

    • one year ago
  11. aaddiittii
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    Noo! Please explain , how did u get it ! i'm sorry to bug you! :P

    • one year ago
  12. DLS
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    1person works n days k hours 150 persons work 150nK :o unitary method,which grade are u in ? :p

    • one year ago
  13. aaddiittii
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    Haha, LOL! I feel s stupid right now! I didn't see that "n days k hrs" thing properly! :P Anyways, that portion is clear now :P Next?

    • one year ago
  14. DLS
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    so form the equation like ques says.. 150nk=150k+146k+142k.....this takes n+8 days

    • one year ago
  15. DLS
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    now use the formula for sum of an arithmetic series and tell me

    • one year ago
  16. DLS
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    you have n as n+8 u have "a" u have "d" !

    • one year ago
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