Inverse Variation

Question

The pressure, P (in lbs/in^2), that a 160-pound person's shoe exerts on the ground when walking varies inversely with the area, A ( in in^2), of the sole of the shoe. When the shoes have a sole area of 40in^2, the pressure is 4lb/in^2. Find an equation that relates these variables.

Answer 1

P= k/A

4 = k/40

k = 160