29. From question the percent up rose by 25%, (2520)-1, by what percent did the call price change and the put price change? Stock price is $35, the years is .5, the percent up is 22%, interest rate is 3.5% The strike price is S35.71, how much are the call and put prices? 30, 29. From question the percent up rose by 25%, (2520)-1, by what percent did the call price change and the put price change? Stock price is $35, the years is .5, the percent up is 22%, interest rate is 3.5% The strike price is S35.71, how much are the call and put prices? 30