Need answer with steps

15046 A solution of NaOH in water contains 20 mass % NaOH at 333K. Density of the solution at that temperature is given as: 1.2 gm/cm3. Evaluate the following: a) Composition of the mixture in terms of mole % b) The concentration of NaOH in terms of moles of NaOH per cm of the solution [Given: Molecular weight of (NaOH) = 40. Molecular weight of water = 18] [3]