suresh
Answered On : May 30th, 2005
51.2%

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niranjan
Answered On : Jun 9th, 2005
52.2
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Sandeep Kumar
Answered On : Jun 17th, 2005
just deduct 20% from 100 = 80,
again reduce 20% of 80 from 80 = 64,
again subtract 20% of 64 from 64 = 51.2
Ans = 51.2 %

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Vaibhav Jain
Answered On : Jul 1st, 2005
Ans
(0.8*0.8*0.8)*100 = 51.2
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kavita kanyal
Answered On : Jul 7th, 2005
Ans: 51.2%

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Harish
Answered On : Apr 17th, 2007
Ans : 44%
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Krishnacumar
Answered On : May 29th, 2007
Let us say we have 100 ml of milk initially.
Now each time we increase the volume by adding 20% water to the new solution.
First time we add 20% of 100 ml = 20ml. Now new volume = 120
Next time we add 20% of 120 ml = 24ml . Now new volume = 144
Third time we add 20% of 144ml = 28.8. Now new volume = 172.8.
Now the percentage of milk = 100/172.8*100 = 58.07
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Rajyashre
Answered On : May 31st, 2007
The volume of the mixture doesn't change because it is given that milk is getting REPLACED with water....
hence the ans should be 51.2%
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vruti
Answered On : Jun 25th, 2007
Water is replaced, not added.
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pradipto_dg
Answered On : Aug 26th, 2007
Pure milk - 100
20% replaced by water. so, it bcomes 80:20=4:1
again 20% replaced.so, 64:36=2:1
again 20% replaced. so, 51.2:48.8
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The options are a) 40% b) 90% c) 51.8% d) 58.2% andthe right answer is 58.2%
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The proportion of milk in t his mixture is 2:3
Given as Pure milk - 100%
20 perentage replaced by water. so it bcomes 80:20 . i.e, >>4:1
again 20 replaced.( kindly note that this replacement is done from 100 percentage of milk which already given, not from the 80 percentage ). Therefore the ratio become 60:40 >>>3:2
again 20 percentage replaced. so it become 40:60 >>>>2:3
Therefore we can conclude that give milk turns into 40 percentage of milk and 60 percentage of water>>>02:03
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let pure milk b 1oo
so 20 of 100=80
again reducing 20 of 80=64
again reducing 20 of 64=51.2
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KRITIKA
Answered On : Sep 26th, 2011
answer is 51.2
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