Question

Ten litres of 15% salt solution is mixed with 15 litres of 10% salt solution. What is the

concentration of the resulting solution ?​

Answer 1

Answer

12%

Step-by-step explanation:

So first you are going to add 10L plus 15 liters, equivalent to 25 liters. next, you are going to multiply the concentration and the volume. So, 10x15= 150 and 15x10= 150. after that, you are going to add it so 150 + 150= 300 and divide it to 25 liters and you will get 12. therfore, the concentration of resulting solution is 12%.

Answer 2

Given:

Quantity of 15% salt solution=10l

Quantity of 10% salt solution=15l

To find:

The concentration of the resulting solution

Solution:

We can find the concentration in a few simple steps -

We are given the concentration of both the salt solutions.

Amount of salt in 15% salt solution= 15% of 10l

=1.5l

Amount of salt in 10% salt solution= 10% of 15l

=1.5l

On mixing the two solutions, the total quantity of solution becomes 10l+15l

=25l

So, the concentration of resulting solution=Total amount of salt×100/ Total quantity of solution

=3×100/25

=12%

Therefore, the concentration of the resulting solution is 12%.