100 litres each of gasoline (55°API), kerosene (40°API), gas oil (31°API), and isopentane (96 °API) are mixed. The density of water at 288.5 K = 0.999 g/mL. (i) Determine the density of the mixture in kg/m3. (ii) What is the specific gravity of the mixture in °API? (iii) Express the composition of the mixture in weight percent.