Quantity of pure liquid in final mixture when y units are taken out and replaced by water

A vessel contains 200 ltof milk. 20 ltof milk taken out from it and replaced by water. Then again from mixture 40 ltare taken out and replaced by water. Find the quantity of milk in this mixture now.

A vessel contains 400 lt of milk. 10 ltof milk taken out from it and replaced by water. Then again from out from it and replaced by water. Then again from mixture 10 ltare taken out and replaced by water.Find the quantity of milk in this mixture now.

A vessel contains 400 ltof milk. 20 ltof milk taken out from it and replaced by water. Then again from mixture 40 lt are taken out and replaced by water. Then again from mixture 60 ltare taken out and replaced by water. Find the ratio of milk and water in the resultant mixture.

A vessel contains 500 litre of milk. 50 litre of milk taken out from it and replaced by water. Then again from mixture 100 litre taken out and replaced by water. mixture 100 litre taken out and replaced by water.Then again from mixture 125 litre taken out and replaced by water. Find the ratio of milk and water in the resultant mixture.

A vessel contains 400 ltof milk. 20 ltof milk taken out from it and replaced by water. Then again from mixture 20 ltare taken out and replaced by water. Find the ratio of milk and water in the result ant mixture

A vessel is full of milk , 63 liter .if 9 liter of milk is taken out and replaced by same amount of water and further 5 liter mixture is taken out and replaced by same amount water then find at the end of 2^(nd) process the amount of water in the mixture ?

A vessel contains some litre of pure milk. 5 litre of milk taken out from it and replaced by water. This process is repeated once more. Then the ratio of milk and water in the result ant mixture becomes 64 : 17. Find the initial quantity of milk.

A vessel contains some litre of pure milk. 12 litre of milk taken out from it and replaced by water. This process is repeated three times more. Then the ratio of milk and water in the resultant mixture becomes 16 : 65 . Find the initial quantity of milk.

A vessel contains a mixture of O_(2 )and N_(2) . The quantity of O_(2) is 16% of total mixture. Some quantity of mixture taken out from it and replaced by N_(2) . This process is repeated once more. Now the quantity of O_(2) is 9% of total mixture. If total quantity of mixture was 8 lt , then find the quantity of mixture which is taken out.