JEE Main 15 Apr 2018 Shift 1 Solved Paper

In a meter bridge, as shown in the figure, it is given that resistance Y=12.5Ω and that the balance is obtained at a distance 39.5 cm from end A (by Jockey J). After interchanging the resistances X and Y, a new balance point is found at a distance l2 from end A. What are the values of X and l2 ?