Ella filled a bucket 7/10 of the way with water. she then poured out 2/10 of the water. how much water remains in the bucket?

 The water that remains in the bucket is

Explanation:

Let the total quantity of water that can be filled in the bucket be x litres

then, volume of water when ella filled it up =

amount of water taken out post that =

amount of water left in the bucket = amount of water when ella filled it up  - amount of water taken out post that =

Thus water remains in the bucket is

answer; polycythemia is the correct answer;

it's diluted or concentrated

in a diluted solution, you can add a lot more solute but in concentrated only a little more can be added