Roman mixes 12 litres of 8% acid solution with a 20% acid solution, which results in a 16% acid solution. How do you find the number of litres of 20% acid solution in the new mixture?
The volume of 20 % acid is 24 L.
We can use the "volume × concentration" formula to work out the answer.
We can write
∴ The volume of 20 % acid is 24 L.