Variation-Alegebra

Question

The pressure exerted by a certain liquid at a given point varies directly as the depth of the point beneath thw surface of the liquid. The pressure at 60 feet is 19 pounds per square inch. What is the pressure at 180 feet?

Answer 1

P = (k)(D)

19 = 60k

k = 19/60

P = (19/60)(180) = 57 pounds/sq in