All questions where they ask you about concentration or volume of a solution prepared with another solution can be solved using the following equation:
Where C1 is the concentration of the first solution, V1 is the volume of the first solution, C2 is the concentration of the second solution and V2 is the volume of the second solution. You only need to be careful to use the rigth units.
This particular question ask for the Volume of the second solution, V2. Then we need to solve for V2 in the previous equation:
