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A potato contains 99% of water …

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A potato contains 99% of water which weighs 100gm.It is kept in the sun to dry. Now it becomes 98%.Then what is its weight.

  • 1 answers

Naveen Sharma 7 years, 1 month ago

Ans. Total Weight = 100g

Let the Lost Weight after Drying = x g

Then New Weight = (100-x)g

Now, 

Lost Weight = Weight of Potato at 99% - Weight of Potato at 98%

=> \(x = {99 \times 100\over 100} - {98 \times (100-x)\over 100}\)

=> \(x = {99 } - 98 +{98x\over 100}\)

=> \(x - {98x\over 100} = 1\)

=> \({2x\over 100} = 1 => x = {100\over 2} = 50\)

New Weight = 100 -50 = 50 g

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