Problema Solution
How many liters of water must be evaporated from 20 L of a 30% salt solution to produce a 50% solution?
Answer provided by our tutors
30% of 20L= 20*30/100= 6l
so, there are 6 L salt in that.
now we want to make this 50%
so, 6 L= 50%
then 100%= 12 L.
so, total water evaporated= 20-12= 8L.
8L is the answer.