How many liters of water should be added to 10 liter of a 20% saline (salt) solution to make a 5% saline solution?

Guest Oct 9, 2021

#1**+1 **

At present you have 2 litres of salt in 8 litres of water which is 2/10 = 0.2 = 20% saline

I want to know how much water I need with 2 litres of salt to get 5% salinity

Let the TOTAL amount of __solution__ be x litres

2/x = 0.05

2/0.05 = x

x=40 litres

But 2 we already have 10 litres of that so we need to add 30L of water.

check

2/40 = 0.05 = 5%

You might find that someone can explain this more simply than me.

Melody Oct 9, 2021