A stock is currently selling for $55 per share. A call option with an exercise price of $65 sells for $3.85 and expires in six months. If the risk-free rate of interest is 3.5 percent per year,...

A stock is currently selling for $55 per share. A call option with an exercise price of $65 sells for $3.85 and expires in six months. If the risk-free rate of interest is 3.5 percent per year, compounded continuously, what is the price of a put option with the same exercise price?