An equimolar binary liquid mixture consists of two components - methane and propane. At \(443 \mathrm{~K}\), the vapour pressure of methane and propane are \(16.5 \mathrm{~atm}\) and \(9.2 \mathrm{~atm}\) respectively. Calculate the total pressure and equilibrium composition of the vapour phase. Assume the mixture follows Raoult's law.