What is the pressure at the bottom of the water layer?

[05holtel]

Homework Statement

A 0.50 meter thick layer of oil floats on a 1.20 meter thick layer of water. What is the pressure at the bottom of the water layer?

Homework Equations

p=p0 + (density)(gravity)(depth)

The Attempt at a Solution

I understand you treat the oil and water separately, as if they were both in separate tanks. Then simply add the results.

The density of the oil is not given so I am not sure how to solve

 

[LowlyPion]

You will apparently need the density of oil. You could assume a rough value of 850 kg/m³ and 1000 for water for the purposes of the problem until you get clarification, or else solve it generally and give your answer as a function of ρ.