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Fresh grapes contain 90% water by weight while dried grapes contain 20% water by weight. What is the weight of dry grapes available from 20 kg of fresh grapes? - Mathematics

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MCQ

Fresh grapes contain 90% water by weight while dried grapes contain 20% water by weight. What is the weight of dry grapes available from 20 kg of fresh grapes?

Options

  • 2 kg

  • 2.4 kg

  • 2.5 kg

  • 2.6 kg

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Solution

2.5 kg

Explanation:

Weight of non-water in 20 kg of fresh grapes

`=10/100xx20=2 "Kg"`

Let there be x kg dry fruit which contains 80% non-water
i.e.

`2=80/100xx"x"`

x = 2.5 kg

Concept: Ratio and Proportion (Entrance Exam)
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