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      Question

      Fresh mushrooms are 90% water, but after drying they

      retain only 20% water. How much fresh mushroom is needed to make 1 kg of dried mushroom?
      A 6 kg Correct Answer Incorrect Answer
      B 3 kg Correct Answer Incorrect Answer
      C 5 kg Correct Answer Incorrect Answer
      D 8 kg Correct Answer Incorrect Answer

      Solution

      Fresh: 10% solid Dry: 80% solid Let fresh = x grams 0.1x = 0.8 * 1000 0.1x = 800 → x = 8000 grams = 8 kg

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