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stupidinmath Group Title

It takes 8 hours to fill a tank with a particular chemical. Without treatment, all of the chemical in the tank would evaporate in 12 hours. If the tank is empty to start, and the chemical is not being treated as it enters the tank, how long will it take to have a full tank?

  • 2 years ago
  • 2 years ago

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  1. mayankdevnani Group Title
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    24 hours In this one the tank is filling at 1/3 the rate so will take 3 times as long to fill

    • 2 years ago
  2. mayankdevnani Group Title
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    ok @stupidinmath

    • 2 years ago
  3. mayankdevnani Group Title
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    @mathslover am i right?

    • 2 years ago
  4. mathslover Group Title
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    http://answers.yahoo.com/question/index?qid=20080108172709AAMgx5j Seems so :)

    • 2 years ago
  5. stupidinmath Group Title
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    this was my guess too. thankyou so much @mayankdevnani :D

    • 2 years ago
  6. mayankdevnani Group Title
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    oh!!!!!!! @stupidinmath very-very welcome

    • 2 years ago
  7. phi Group Title
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    this is a rate * time = distance (but distance is 1 filled tank) rate to fill is 1 tank per 8 hours or 1/8 rate to empty is 1/12 the difference between filling and emptying is 1/8 - 1/12 = 1/24 now do rate * time= 1 tank 1/24 * t =1 t= 24 hours

    • 2 years ago
  8. stupidinmath Group Title
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    Oh. Nice explanation, @phi . thanks also:)

    • 2 years ago
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