Math question

[click2pallu]

Can anyone explain on this math ques?

If wool fat absorbs twice its wt of water,how much additional water will be absorbed by 4000g of hydrous wool fat containing 25% of water?

thanx.

[Lenny32]

Answer to your question...
4000g of wool fat will absorb 8000g of water (i.e. twice it's wt)
but it already contains 25% of water = 25/100 x 4000g = 1000g
so it will only be able to absorb 8000g - 1000g = 7000g more of water

hope this helps you!

[paka3012]

Originally Posted by Lenny32

Answer to your question...
4000g of wool fat will absorb 8000g of water (i.e. twice it's wt)
but it already contains 25% of water = 25/100 x 4000g = 1000g
so it will only be able to absorb 8000g - 1000g = 7000g more of water

hope this helps you!

i think you made one mistake. total 8000ml water absorbed by wool fat
and 25% gonna be 25/100 X 8000g= 2000g
so it will be able to absorb 8000g - 2000g= 6000g more water

[click2pallu]

Thanks guys for the reply but the answer is given 5000.i dont understand how.

[MiraCB]

If the answer is 5000ml then you need to look at the problem this way

The 4000 g of hydrous wool fat is 25% water
4000 X .25 = 1000g of water
Therefore you have 4000 - 1000 = 3000 gram of wool fat with the ability to absorb water
If it absorbs twice its weight then it has the ability to absorb 6000 g of water.
It has already absorbed 1000 g of water so therefore
6000-1000 = 5000 g of water able to be absorbed