Physics Fluids?

Question

The human lungs can function satisfactory up to a limit where the pressure difference between the outside and inside of the lungs is one-twentieth of an atmosphere, if a diver usesa snorkel for breathing, how far below the water can she swim? Assume the diver is in salt water whose density is 1025kg/m^3.

Using the Pressure and Depth in a Static Fluid:

P(2)= P(1) + p(density)gh

Where P(1) is the pressure at one level, P(2) is the pressure at a level that is h meters deeper, and g is the magnitude of the acceleration due to gravity.

Answer 1

More datas required.