A closed container contains 1.5 m of oil, 1 m of water, 20 cm of mercury, and a top air space, all of which are in 20 °C. If p Subscript b o t m Baseline equals 60 k upper P ap Subscript b o t m Baseline equals 60 k upper P a p Subscript b o t m Baseline equals 60 k upper P ap Subscript b o t m Baseline equals 60 k upper P ap Subscript b o t t o m Baseline equals 60 k upper P a60kPa, then what is the pressure in the air?