A put option and a call option with an exercise price of $60 expire in four months and sell for $.90 and $5.50, respectively. If the stock is currently priced at $63.30, what is the annual continuously compounded rate of interest?
A put option and a call option with an exercise price of $65 and three months to expiration sells for $1.25 and $5.50, respectively. If the risk-free rate is 4.3 percent per year, compounded continuously, what is the current stock price?