please help me with this derivatives problem :
We have two portfolios the first you have stock and put option with a strike price X for example ( $50 ). strategy of buying a call option with strike price X for example ( $50 ) in addition you buy a treasury bills with value equal to the exercise price of the call , and with maturity date equal to the expiration date of the two option . are you can pricing the put option if you know the call option price ?