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stupidinmath

  • 3 years ago

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?

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  1. mayankdevnani
    • 3 years ago
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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. mayankdevnani
    • 3 years ago
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    ok @stupidinmath

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

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

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

  6. mayankdevnani
    • 3 years ago
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    oh!!!!!!! @stupidinmath very-very welcome

  7. phi
    • 3 years ago
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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

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

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