The stock price of WindpowerIne is increasing at a rate of 4% per week. Its initial value was $20 per share. On the other hand, the stock price in GerbilEnergy is crashing (losing value) at a rate of 11% per week. If its price was S120 per share when Windpower was at $20, after how many weeks will the stock prices be the same? Round to the nearest tenth of a week