JEE Advanced 2024 Chemistry question on Solutions

Vessel-1 contains $w_2$ g of a non-volatile solute X dissolved in $w_1$ g of water. Vessel-2 contains $w_2$ g of another non-volatile solute Y dissolved in $w_1$ g of water. Both the vessels are at the same temperature and pressure. The molar mass of X is 80% of that of Y. The van't Hoff factor for X is 1.2 times of that of Y for their respective concentrations.
The elevation of boiling point for solution in Vessel-1 is _____ % of the solution in Vessel-2.