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    Question

    Fresh grapes contain 90% water and dried grapes contain

    20% water. From 20 kg of fresh grapes, how many kgs of dried grapes can be obtained?
    A 2.5 kg Correct Answer Incorrect Answer
    B 3.5 kg Correct Answer Incorrect Answer
    C 4.5 kg Correct Answer Incorrect Answer
    D 5 kg Correct Answer Incorrect Answer

    Solution

    Let the weight of dry grapes obtain from 20 kg of fresh grapes is Y kg According to the question The quantity of water in 20 kg of fresh grapes is 20 ├Ч 90% 18 kg The remaining weight of 20 kg of fresh grapes is 20 - 18 2 kg Now, 2 kg of weight is equal to 80% of dry grapes, then Y ├Ч 80% = 2 Y = (2 ├Ч 5)/4 Y = 2.5 kg тИ┤ The required weight of dry grapes is 2.5 kg.

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