Chemistry - Liquid Solution Question with Solution | TestHub

The solution containing $6\mathrm{g}$ urea (molar mass 60 ) per ${\mathrm{dm}}^3$ of water and another solution containing $9\mathrm{g}$ of solute $\mathrm{A}$ per ${\mathrm{dm}}^3$ water freezes at same temperature. What is molar mass of A?