AP EAPCET 6 Sep 2021 Shift 2 Paper

50mL of 0.2NHCl is titrated against 0.1NNaOH solution. The titration is discontinued after adding 50mL of NaOH solution. The remaining titration is completed by adding 0.5NKOH solution. What is the volume of KOH solution required for completing the titration?