50 mL of 0.2 molal urea solution (density = 1.012 g mL^–1 at 300 K) is mixed with 250 mL of a solution containing 0.06 g of urea. Both the solutions were prepared in the same solvent. The osmotic pressure (in torr) of the resulting at 300 K is ____.
[Use : Molar mass of urea = 60 g mol^–1; gas constant, R = 62 L torr K^–1 mol^–1;
Assume, $∆$_mix H = 0, $∆$_mix V = 0]