If water is freezed to become ice, its volume is increased by 10% :

If water is freezed to become ice, its volume is increased by 10%, then if the ice melted to water again, its volume will be decreased by:

  1. 9 ½%
  2. 9 1/11%
  3. 8%
  4. 9%
Anurag Mishra Professor Asked on 11th December 2015 in Maths.
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1 Answer(s)

Answer: (2) 9  1/11%

Explanation:-

Let the volume of the water be = 100 ml

If water is froze   to become ice, its volume is increased by 10%.
Then, the volume of the ice = 100 x 110/100
 = 110 ml

If the melted to water again,
Then, the volume of the water = 100 ml

The volume decreased by = 110 – 100
 = 10 ml

Then, the percentage of decreased volume = 10 x 100/110
 = 100/11 %
 = 9  1/11%

Hence, the answer is (2) 9  1/11%. 

Anurag Mishra Professor Answered on 11th December 2015.
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