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Previous Year Question (PYQs)

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




Solution

The weight of non-water in 20 kg of fresh grapes (which is 100-90=10% of whole weight) will be the same as the weight of non-water in x kg of dried grapes (which is 100-20=80% of whole weight), so 
20∗0.1=x∗0.8 --> x=2.5.

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ASPIRE , MCA Aspirants
Commented Jul 20 , 2020
The weight of non-water in 20 kg of fresh grapes (which is 100-90=10% of whole weight) will be the same as the weight of non-water in x kg of dried grapes (which is 100-20=80% of whole weight), so --> . 20×0.1=x ×0.8, x =2.5

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