The price of a stock is $15. Consider put and call options (European style) on this stock with the same maturity of one year. The put option has a strike of $10 and is quoted at $1 per share. The call option has a strike of $15 and is quoted as $2 per share. Suppose that an investor has the following portfolio: long 200 shares, short 2 call options (each on 100 shares) and long 2 put options (each on 100 shares).

For what range of the stock price at the maturity of these options will the investor get a (positive) profit?