Basic Option Strategies Profit Computation

Assume the below prices for calls and puts:

	Call			Put
Strike	Jul	Aug	Oct	Jul	Aug	Oct
165	2.7	5.25	8.1	2.4	4.75	6.75
170	0.8	3.25	6	5.75	7.5	9

1. Buy one August 170 put contract. Hold it until expiration. Identify the breakeven stock price at expiration. What is the profit/loss if ST=190?
2. Buy one October 165 call contract. Hold it until the options expire. Identify the breakeven stock price at expiration. What is the Maximum possible loss from the transaction? What is the profit/loss if ST=185
3. Buy 100 shares of stocks and buy one August 165 put contract. Hold the position until expiration. Determine the breakeven stock price at expiration, the maximum profit and the maximum loss. What is the profit/loss if ST=150.
4. Buy 100 shares of stock and write one October 170 call contract. Hold the position until expiration. Determine the breakeven stock price at expiration, the maximum profit and the maximum loss. What is the profit/loss if ST=185.