Option written on one share of Deadwood Lumber Co. stock

A European PUT option written on one share of Deadwood Lumber Co. stock has the following parameter values: S = $28, X = $3 0, r = 5% p.a., cr = 30% p.a., T = 6 months. Find the premium of this option, rounded to 2 decimals (e.g., 1.15; do NOT include a dollar sign in your answer). NOTE: Use the continuous time version of the Black-Scholes and Put-Call Parity equations (i.e., do NOT use the book's version).