How the cellpotential of the test solution was measured

Question

Nernst Equation: A test solution contained 2 mL of 0.10 M Ag⁺. A silver strip was dipped into the test solution, and a cell potential of 0.0592 V was measured against an Ag/Ag⁺ (1.0M) reference half-cell.Then 2 mL of 0.50 M S₂O₃^2- was added to the test solution. No precipitate formed. The cellpotential of the test solution was measured against the reference half-cell, and was found to have increased to 0.532 V. What is the[Ag⁺] in the test solution after the S₂O₃^2- was added?