Calculating Chloride Ion Molar Concentration

[Miike012]

Homework Statement

What is the molar concentration of chloride ions in a solution prepared by mixing 100 ml of 2.0 M KCl with 50 ml of a 1.5 M CaCl2 solution...?

I don't know where to start...

Homework Equations

The Attempt at a Solution

 

[Borek]

Probably molar concentration definition is a good starting point. What do you need to plug into the definition to solve the question?