Fresh fruit contains water and dry fruit contains water. How

Fresh fruit contains 68% water and dry fruit contains 20% water. How much dry fruit can be obtained from 100 kg of fresh fruits ?

  1. A.

    43 kg

  2. B.

    40 kg

  3. C.

    42 kg

  4. D.

    41 kg

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Correct answer: B

Answer: 40 kg

Method 1 (algebraic):

  1. Fresh fruit: 100 kg with 68% water → non-water (fruit solids) = 100 × (1 − 0.68) = 32 kg.

  2. Let x be the weight of dry fruit (including water). Dry fruit has 20% water, so non-water = x × (1 − 0.20) = 0.8x.

  3. Equate non-water amounts: 0.8x = 32 → x = 32 ÷ 0.8 = 40 kg.

Method 2 (percentage of fruit solids):

  • Fresh fruit: fruit solids = 32% of 100 kg = 32 kg.

  • Dry fruit: fruit solids are 80% of its weight. If dry fruit weighs y kg, then 0.8y = 32 → y = 40 kg.

Therefore, 100 kg of fresh fruits yield 40 kg of dry fruit.

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